CN101847480A - Magnetic material and preparation method thereof - Google Patents
Magnetic material and preparation method thereof Download PDFInfo
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- CN101847480A CN101847480A CN 201010198467 CN201010198467A CN101847480A CN 101847480 A CN101847480 A CN 101847480A CN 201010198467 CN201010198467 CN 201010198467 CN 201010198467 A CN201010198467 A CN 201010198467A CN 101847480 A CN101847480 A CN 101847480A
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Abstract
The invention relates to a magnetic material and a preparation method thereof. The molecular formula of the magnetic material is of SmCo1-xNixAsO, wherein x is more than zero and is less than 0.3, and the magnetic material has the crystal structure of Zr, Cu, Si and As. The magnetic material has abundant magnetic properties, when x is more than zero and less than 0.2, along the reduction of the temperature, the ferromagnetic transformation and the antiferromagnetic transformation are sequentially happened, and along the increase of the quantity of the doped Ni, the ferromagnetic transformation temperature and the antiferromagnetic transformation temperature are decreased; when x is equal to 0.2, the ferromagnetic property is completely inhibited, and only the antiferromagneti transformation happens; when x is more than zero and is less than or equal to 0.2, below the antiferromagnetic transformation temperature, the metamagnetism transformation happens in the variation curve of the magnetization strength along the magnetic field; and when x is more than 0.2 and is less than 0.3, the magnetic material is of an antiferromagnetic material. The magnetic material can be used for producing a storage device and an exchanging offset part; or the magnetic material can be made into a multi-component functionally-gradient material with prepared components being distributed in a gradient and is used for magnetic funnel junction; or by utilizing the advantage that the magnetic material has metamagnetism transformation under the low temperature, the magnetic material can be used as a low-temperature magnetic refrigerating material.
Description
Technical field
The present invention relates to a kind of magnetic material, particularly a kind of magnetic material and preparation method thereof with ZrCuSiAs type crystal structure.
Background technology
Magnetic material is of a great variety, and it is widely used in industries such as motor, electric power, information, medical treatment as functional material.Be broadly divided into according to its purposes: permanent magnetism, soft magnetism, magnetic recording, gyromagnet, stealthy, magnetic cooling, Magnetic Sensor, magneto-optic, magnetic card, magnetostrictive material and spintronics material etc.; Be divided into ferromagnetic, ferrous magnetic, antiferromagnetic, paramagnetic and super paramagnetic material according to magnetic ordering structure.Magnetic material issues the magnetisation phase transformation in different magnetic field and temperature, shows magnetic properties such as ferromagnetic, ferrous magnetic, antiferromagnetic, paramagnetic, when being subjected to external magnetic field or other physical actions, shows effects such as special magnetic force, magnetic heat, magneto-optic, magnetoelectricity.Some magnetic materials under specified temp, show the metamagnetic transformation phenomenon.Be under the outside magnetic field effect, the magnetization was linear before this to be increased, when external magnetic field intensity is increased to a certain value, and the phenomenon that the magnetization of magnetic material sharply increases suddenly, realization is by the transformation of a low magnetic state to the High-Field magnetic state, or the jump of the spin from the antiferromagnetic state to the ferrimagnetic state changes.This metamagnetic transformation phenomenon can be used for giant magnetic resistance and huge magneto-caloric material.
At the beginning of 2008, scientist has found the new high temperature superconducting materia of a class---iron-based superconducting material, has caused the extensive concern of scientific circles.Iron-based superconducting material can obtain by mixing on the different element positions in fertile material.For example mix the iron-based superconducting material that Ni obtains on the Fe position in the LaFeAsO fertile material, its superconducting transition temperature is 6.5K (" Physical Review B " the 79th volume, the 174505th page).Except research, the magnetic property research of parent and dopant material is also become a hot subject when prescience to the superconductivity of iron-based superconducting material.Discover that LaFeAsO at 137K antiferromagnetic transition (" Nature " the 453rd volume, the 899th page), EuFe has taken place
2As
2Spin density wave takes place near 200K change, 20K has experienced antiferromagnetic transition (" Physical Review B " the 78th volume, the 052501st page), partly replaces EuFe with Ni
2As
2In Fe suppressed that spin density wave changes and antiferromagnetic transition, and change ferromagnetism (" Physical Review B " the 79th volume, the 094426th page) at low temperatures into.And then, develop into certain element in the fertile material is replaced with other elements, for example the Fe element among the LaFeAsO is formed LaNiAsO superconductor (" Physical Review B " the 78th volume, the 060504th page) with the replacement of Ni element; Fe element among the LaFeAsO is formed the LaCoAsO material with the replacement of Co element, studies show that this material is a kind of ferromagnetic material, ferromagnetic transformation temperature is 66K, again the As element among the LaCoAsO is usually replaced with P unit and form the LaCoPO ferromagnetic material, ferromagnetic transformation temperature is 43K (" Physical ReviewB " the 77th volume, the 224331st page).
Summary of the invention
Purpose of the present invention just provides a kind of magnetic material, and this magnetic material has abundant magnetic property, and with component and variation of temperature, the magnetic property of this material can take place clocklike to change continuously, can be used for making holder, exchange biased device; Perhaps make the multicomponent function-graded material of composition distribution gradient, be used for MTJ etc.; Perhaps utilize its characteristics that metamagnetic transformation takes place at low temperatures, as the cryomagnetism material of cooling.
The present invention realizes its goal of the invention, and the technical scheme that is adopted is: a kind of magnetic material, its molecular formula are SmCo
1-xNi
xAsO, 0＜x＜0.3 has the ZrCuSiAs type crystal structure.
Compared with prior art, the invention has the beneficial effects as follows:
SmCoAsO is a kind of material of the ZrCuSiAs of having type crystal structure, has abundant magnetic property; Again because Co and Ni ion all have magnetic, partly substitute the Co ion with the Ni ion, just in the SmCoAsO system, introduced a kind of new magnetic ion again, produced the interaction of Co ion and Ni ion, electronic structure and magnetic to the SmCoAsO system have caused material impact, can change and control SmCo by the incorporation of adjusting Ni
1-xNi
xThe magnetic property of AsO.
Experimental result shows, though change has taken place in lattice parameter, and SmCo
1-xNi
xThe AsO magnetic material still has the ZrCuSiAs type crystal structure, and single phase property is fine; With the increase of mixing Ni amount x, antiferromagnetic transition temperature and ferromagnetic transformation temperature all reduce.When 0＜x＜0.2, along with the reduction of temperature, ferromagnetic and antiferromagnetic transition has taken place successively, and with the increase of mixing the Ni amount, ferromagnetic transformation temperature and antiferromagnetic transition temperature descend all; When to mix Ni amount be 0.2≤x＜0.3, ferromagnetism was suppressed fully, SmCo
1-xNi
xAsO becomes a kind of antiferromagnetic materials.Metamagnetic transformation below the antiferromagnetic transition temperature, in the change curve of the magnetization with magnetic field, has taken place in 0＜x≤0.2 o'clock, and the metamagnetic transformation field reduces with the rising of temperature, becomes magnet-wire and shortens with the increase of mixing the Ni amount.As seen, new magnetic material SmCo of the present invention
1-xNi
xAsO has abundant magnetic property and numerous using values:
One, because SmCoAsO itself is a kind of material with multiple magnetic,, has suppressed ferromagnetism, and strengthened antiferromagnetism by mixing Ni on the Co position in SmCoAsO, when x 〉=0.2, SmCo
1-xNi
xAsO becomes a kind of pure antiferromagnetic materials, and therefore, material of the present invention can be used for making holder, exchange biased device.
Two, along with the continuous variation of Ni doping in the material of the present invention, SmCo
1-xNi
xThe also corresponding generation of the magnetic property of AsO changes continuously.Promptly with the increase of mixing Ni amount x, antiferromagnetic transition temperature and ferromagnetic transformation temperature all reduce.Utilize this characteristic, material of the present invention can be made into the multicomponent function-graded material, MTJ of composition distribution gradient etc., and can select different compositions according to different demands, each other compatible fine.
Three, low-doped amount 0＜x≤0.2 o'clock, below the antiferromagnetic transition temperature, metamagnetic transformation has taken place, and with the rising of temperature, the metamagnetic transformation field reduces, and with the increase of doping, becomes magnet-wire and shortens at it.Therefore, material SmCo of the present invention
1-xNi
xAsO can be used as the magnetic material of cooling.
Second purpose of the present invention provides a kind of preparation SmCo
1-xNi
xThe method of AsO magnetic material.
The present invention realizes its second goal of the invention, and the technical scheme that is adopted is: a kind of method for preparing above-mentioned magnetic material, its practice is: with raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of 0＜x＜0.3, ground and mixed is pressed into sheet after evenly, behind the tantalum piece parcel, places the vitreosil pipe, 1100～1150 ℃ of sintering 20～60 hours, promptly.
Preparation method of the present invention is simple, and it is convenient to implement, and the material densification that makes is firm, stable performance.
Above-mentioned weighing, grinding, mixing, compressing tablet, parcel and sintering operation all carry out under argon shield atmosphere.
All operations all carries out under argon shield atmosphere; do the oxidation that can prevent Sm in the raw material, Co, Ni and As like this; guarantee that further the amount that makes oxygen in the material accurately controlled by the amount of oxygen in the raw material, guarantee to make that material composition is determined, homogeneous, also guaranteed to make the magnetic property of material.Also can avoid simultaneously the injury of poisonous As and oxide thereof to operating personnel.
The present invention is further described below in conjunction with accompanying drawing and concrete execution mode.
Description of drawings
Fig. 1 is the SmCo of the embodiment of the invention two preparations
0.95Ni
0.05The X ray diffracting spectrum of AsO magnetic material.Wherein: ordinate is a diffracted intensity, and unit is arbitrary unit (a.u.); Abscissa is the angle of diffraction 2 θ, and unit is degree (deg).
Fig. 2 a and Fig. 2 b are the SmCo of the embodiment of the invention two preparations
0.95Ni
0.05Energy spectrogram and 3000 times of scanning electron microscopy (SEM) photo thereof of AsO magnetic material.
Fig. 3 is the SmCo of the embodiment of the invention two preparations
0.95Ni
0.05The magnetization of AsO magnetic material is with the variation of temperature curve.Wherein: ordinate is magnetic moment (Moment), and unit is electromagnetism unit (emu/g); Abscissa is a temperature, and unit is K (Kelvin).
Fig. 4 is the SmCo of the embodiment of the invention two preparations
0.95Ni
0.05The magnetization of AsO magnetic material is with the change curve in magnetic field.Wherein: ordinate is magnetic moment (Moment), and unit is electromagnetism unit (emu/g); Abscissa is magnetic field (H), and unit is T (Tesla).
Fig. 5 is the SmCo of the embodiment of the invention two preparations
0.95Ni
0.05The metamagnetic transformation field of AsO magnetic material below the antiferromagnetic transition temperature is with the variation of temperature curve.Wherein: ordinate is magnetic field (H), and unit is T (Tesla); Abscissa is a temperature, and unit is K (Kelvin).
Fig. 6 is the SmCo of the embodiment of the invention four preparations
0.9Ni
0.1The magnetization of AsO magnetic material is with the variation of temperature curve.Wherein: ordinate is magnetic moment (Moment), and unit is electromagnetism unit (emu/g); Abscissa is a temperature, and unit is K (Kelvin).
Fig. 7 is the SmCo of the embodiment of the invention four preparations
0.9Ni
0.1The magnetization of AsO magnetic material is with the change curve in magnetic field.Wherein: ordinate is magnetic moment (Moment), and unit is electromagnetism unit (emu/g); Abscissa is magnetic field (H), and unit is T (Tesla).
Fig. 8 is the SmCo of the embodiment of the invention four preparations
0.9Ni
0.1The metamagnetic transformation field of AsO magnetic material below the antiferromagnetic transition temperature is with the variation of temperature curve.Wherein: ordinate is magnetic field (H), and unit is T (Tesla); Abscissa is a temperature, and unit is K (Kelvin).
Fig. 9 is the SmCo of the embodiment of the invention ten preparations
0.75Ni
0.25The X ray diffracting spectrum of AsO magnetic material.Wherein: ordinate is a diffracted intensity, and unit is arbitrary unit (a.u.); Abscissa is the angle of diffraction 2 θ, and unit is degree (deg).
Figure 10 is the SmCo of the embodiment of the invention ten preparations
0.75Ni
0.25The magnetization of AsO magnetic material is with the variation of temperature curve.Wherein: ordinate is magnetic moment (Moment), and unit is electromagnetism unit (emu/g); Abscissa is a temperature, and unit is K (Kelvin).
Embodiment
Embodiment one
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.98Ni
0.02AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.02, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, and 1100 ℃ of sintering 48 hours promptly get SmCo
0.98Ni
0.02The AsO magnetic material.Experiment records its ferromagnetic transformation temperature and the antiferromagnetic transition temperature is respectively 76K and 54K.
Embodiment two
Under argon shield atmosphere: with raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.95Ni
0.05AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.05, ground and mixed evenly after, be pressed into sheet and, be sealed in then in the vitreosil pipe with the tantalum piece parcel, 1150 ℃ of sintering 36 hours, promptly getting molecular formula is SmCo
0.95Ni
0.05The magnetic material of AsO.
Fig. 1-5 is the SmCo of the example method preparation
0.95Ni
0.05The performance plot of AsO magnetic material.The SmCo of Fig. 1 for making with the example method
0.95Ni
0.05The X ray diffracting spectrum of AsO magnetic material, SmCo as shown in Figure 1
0.95Ni
0.05The AsO magnetic material is single-phase, does not observe any impurity phase, and has four jiaos of ZrCuSiAs type structures.
Fig. 2 a and Fig. 2 b are the SmCo that the example method makes
0.95Ni
0.05The AsO magnetic material can spectrogram and amplify 3000 times of scanning electron microscopy (SEM) photo, the scanning electron microscopy from Fig. 2 b (SEM) photo as can be seen, SmCo
0.95Ni
0.05The AsO shape characteristic is a sheet, and the position of figure orbicular spot is the position of doing the power spectrum test, can contain Sm, Co, Ni, As, O the obtained as can be seen sample of spectrogram from Fig. 2 a, and quantitative analysis shows Sm: Co: Ni: As=1: 0.95: 0.05: 1.
The SmCo that Fig. 3 makes for the example method
0.95Ni
0.05The magnetization of AsO magnetic material is with the variation of temperature curve, and as seen from Figure 3, ferromagnetic transformation temperature and antiferromagnetic transition temperature are respectively 75K and 52K.
The SmCo of Fig. 4 for making with the example method
0.95Ni
0.05The magnetization of AsO magnetic material is with the change curve of externally-applied magnetic field, the temperature that many middle curves are corresponding different respectively, among the figure by symbol, △, zero, ■, ● the curve that strings, corresponding probe temperature is respectively 10K, 20K, 30K, 45K, 60K.As seen from Figure 4, be below the 52K in the antiferromagnetic transition temperature, SmCo
0.95Ni
0.05Metamagnetic transformation has taken place in the AsO magnetic material, with 10K and 20K is example, as in position shown in the arrow among Fig. 4 metamagnetic transformation has taken place, magnetic field value corresponding to abscissa is the metamagnetic transformation field, in magnetic field during less than the metamagnetic transformation field, the magnetization is with the increase of the increase linearity in magnetic field, show as antiferromagnetism, and in magnetic field during greater than the metamagnetic transformation field, the magnetization increases gradually with the increase in magnetic field is nonlinear, and the attitude that reaches capacity gradually, show as ferromagnetism, therefore with the increase in magnetic field,, taken place by the metamagnetic transformation of antiferromagnetic state to ferrimagnetic state at place, metamagnetic transformation field.Between antiferromagnetic and ferromagnetic transformation, SmCo
0.95Ni
0.05The AsO magnetic material shows as ferromagnetism.
The SmCo of Fig. 5 for making with the example method
0.95Ni
0.05The metamagnetic transformation field of AsO magnetic material below the antiferromagnetic transition temperature promptly becomes magnet-wire with the variation of temperature curve, and as shown in Figure 5, the metamagnetic transformation field reduces with the rising of temperature.
Above test result explanation, new magnetic material of the present invention is SmCo
0.95Ni
0.05AsO, and have multiple magnetic transition.
Embodiment three
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.95Ni
0.05AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.05, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, and 1100 ℃ of sintering 20 hours promptly get SmCo
0.95Ni
0.05The AsO magnetic material.Experiment records its ferromagnetic transformation temperature and the antiferromagnetic transition temperature is respectively 75K and 52K.
Embodiment four
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.9Ni
0.1AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.1, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, 1120 ℃ of sintering 60 hours, promptly.
The SmCo that Fig. 6 makes for the example method
0.9Ni
0.1The magnetization of AsO magnetic material is with the variation of temperature curve, and as seen from Figure 6, ferromagnetic transformation temperature and antiferromagnetic transition temperature are respectively 61K and 42K, compares with embodiment one, and these two temperature reduce.
The SmCo of Fig. 7 for making with the example method
0.9Ni
0.1The magnetization of AsO magnetic material is with the change curve in magnetic field, as seen from Figure 7, below the antiferromagnetic transition temperature, SmCo
0.9Ni
0.1Metamagnetic transformation has taken place in the AsO magnetic material, between antiferromagnetic transition temperature and ferromagnetic transformation temperature, shows as ferromagnetism.
The SmCo of Fig. 8 for making with the example method
0.9Ni
0.1The metamagnetic transformation field of AsO magnetic material below the antiferromagnetic transition temperature is with the variation of temperature curve, promptly become magnet-wire, as shown in Figure 8, the metamagnetic transformation field reduces with the rising of temperature, compare with Fig. 5 of embodiment one, find to become magnet-wire and obviously shortened, the increase with doping is described, become magnet-wire and shorten.
Embodiment five
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.9Ni
0.1AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.1, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, and 1140 ℃ of sintering 30 hours promptly get SmCo
0.9Ni
0.1The AsO magnetic material.Experiment records its ferromagnetic transformation temperature and the antiferromagnetic transition temperature is respectively 61K and 42K.
Embodiment six
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.85Ni
0.15AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.15, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, and 1150 ℃ of sintering 20 hours promptly get SmCo
0.85Ni
0.15The AsO magnetic material, experiment records its ferromagnetic transformation temperature and the antiferromagnetic transition temperature is respectively 40K and 32K.
Embodiment seven
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.85Ni
0.15AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.15, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, and 1100 ℃ of sintering 60 hours promptly get SmCo
0.85Ni
0.15The AsO magnetic material, experiment records its ferromagnetic transformation temperature and the antiferromagnetic transition temperature is respectively 40K and 32K.
Embodiment eight
With raw material SmAs, Co
2O
3, Co, Fe be according to SmCo
0.8Ni
0.2AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.2, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, and 1130 ℃ of sintering 40 hours promptly get SmCo
0.8Ni
0.2The AsO magnetic material, it is 22K that experiment records its antiferromagnetic transition temperature.
Embodiment nine
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.8Ni
0.2AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.2, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, and 1150 ℃ of sintering 24 hours promptly get SmCo
0.8Ni
0.2The AsO magnetic material, it is 22K that experiment records its antiferromagnetic transition temperature.
In conjunction with above embodiment one to embodiment eight, magnetic material SmCo
1-xNi
xAsO is with the variation of component, and magnetic property takes place clocklike to change.With the increase of mixing the Ni amount, ferromagnetic and antiferromagnetic transition temperature all descends; When mixing Ni amount when reaching 0.2, SmCo
1-xNi
xAsO becomes a kind of antiferromagnetic materials.Metamagnetic transformation below the antiferromagnetic transition temperature, has taken place in 0＜x≤0.2 o'clock, and under fixing component condition, with the rising of temperature, the metamagnetic transformation field reduces; With the increase of mixing the Ni amount, become magnet-wire and shorten.Because magnetic material SmCo of the present invention
1-xNi
xTherefore AsO has above character, can be used as function-graded material or magnetic cooling material, also can be applicable in MTJ, holder, the device such as exchange biased.
Embodiment ten
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.75Ni
0.25AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.25, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, 1110 ℃ of sintering 54 hours, promptly.
The SmCo of Fig. 9 for making with the example method
0.75Ni
0.25The X ray diffracting spectrum of AsO magnetic material, SmCo as shown in Figure 9
0.75Ni
0.25The AsO magnetic material is single-phase, observes mutually without any impurity, and has four jiaos of ZrCuSiAs type structures; The SmCo that Figure 10 makes for the example method
0.75Ni
0.25The magnetization of AsO magnetic material is with the variation of temperature curve, as seen from Figure 10, and the antiferromagnetic transition temperature
Be 16K.These test result explanations, new magnetic material SmCo of the present invention
0.75Ni
0.25AsO is an antiferromagnet.
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.75Ni
0.25AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.25, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, and 1150 ℃ of sintering 48 hours promptly get SmCo
0.75Ni
0.25The AsO magnetic material, it is 16K that experiment records its antiferromagnetic transition temperature.
Embodiment 12
With raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
0.71Ni
0.29AsO, i.e. SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of x=0.29, ground and mixed is pressed into sheet after evenly and with the tantalum piece parcel, is sealed in then in the vitreosil pipe, and 1150 ℃ of sintering 48 hours promptly get SmCo
0.71Ni
0.29The AsO magnetic material, it is 12K that experiment records its antiferromagnetic transition temperature.
Claims (3)
1. magnetic material, its molecular formula is SmCo
1-xNi
xAsO, 0＜x＜0.3 has the ZrCuSiAs type crystal structure.
2. method for preparing the described magnetic material of claim 1, its practice is: with raw material SmAs, Co
2O
3, Co, Ni be according to SmCo
1-xNi
xAsO, the stoichiometric proportion weighing of 0＜x＜0.3, ground and mixed is pressed into sheet after evenly, behind the tantalum piece parcel, places the vitreosil pipe, and 1100～1150 ℃ of sintering 20～60 hours get final product.
3. a kind of method for preparing magnetic material as claimed in claim 2 is characterized in that: described weighing, grinding, mixing, compressing tablet, parcel and sintering operation, all carry out under argon shield atmosphere.
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Cited By (1)
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|---|---|---|---|---|
| CN111418035A (en) * | 2017-10-27 | 2020-07-14 | 真空融化股份有限公司 | High permeability soft magnetic alloy and method for manufacturing high permeability soft magnetic alloy |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456736A (en) * | 2009-01-05 | 2009-06-17 | 西南交通大学 | Iridium doped iron base superconductor and preparation method thereof |
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2010
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456736A (en) * | 2009-01-05 | 2009-06-17 | 西南交通大学 | Iridium doped iron base superconductor and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《//arxiv.org/ftp/arxiv/papers/1001/1001.3719.pdf》 20100508 V.P.S. Awana etal. magnetic phase transitions in SmCoAsO , 2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111418035A (en) * | 2017-10-27 | 2020-07-14 | 真空融化股份有限公司 | High permeability soft magnetic alloy and method for manufacturing high permeability soft magnetic alloy |
| CN111418035B (en) * | 2017-10-27 | 2022-06-24 | 真空融化股份有限公司 | High permeability soft magnetic alloy and method for manufacturing high permeability soft magnetic alloy |
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