CN104498802A - Alloy material with room-temperature magnetostrictive effect - Google Patents
Alloy material with room-temperature magnetostrictive effect Download PDFInfo
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- CN104498802A CN104498802A CN201410719517.6A CN201410719517A CN104498802A CN 104498802 A CN104498802 A CN 104498802A CN 201410719517 A CN201410719517 A CN 201410719517A CN 104498802 A CN104498802 A CN 104498802A
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- China
- Prior art keywords
- temperature
- magnetic field
- magnetostrictive effect
- alloy material
- induced
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- 239000000956 alloy Substances 0.000 title claims abstract description 20
- 230000000694 effects Effects 0.000 title claims abstract description 14
- 230000005291 magnetic effect Effects 0.000 claims abstract description 23
- 239000011572 manganese Substances 0.000 claims abstract description 10
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 7
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 7
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims abstract description 6
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims abstract description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 5
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 230000009466 transformation Effects 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 150000002739 metals Chemical class 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 229910003289 NiMn Inorganic materials 0.000 description 1
- 229910005811 NiMnSb Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000005388 metamagnetism Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
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- Soft Magnetic Materials (AREA)
Abstract
The invention discloses an alloy material with a room-temperature magnetostrictive effect. The alloy is prepared from the following four metals: gadolinium (Gd), samarium (Sm), manganese (Mn) and germanium (Ge); the molecular formula is Gd[1-x]SmxMn2Ge2(x=0.3-0.4), and particularly, x=0.37, 0.34. The alloy material has the beneficial effects that 1) temperature and magnetic field-induced magnetoelastic phase change is carried out at 270-300K; 2) the phase-change critical field is lower than 1T, and the magnetic hysteresis is 3000e; and 3) magnetic field-induced magnetoelastic phase change along with the magnetostrictive effect is about 900ppm, the temperature and magnetic field-induced magnetoelastic phase change is carried out at a room temperature, the distortion amount of alpha axis of a crystal lattice is 0.16% in the phase change process, and the room-temperature magnetostriction is about 900ppm.
Description
Technical field
The present invention relates to a kind of alloy material Gd with room temperature magnetostrictive effect
1-xsm
xmn
2ge
2(x=0.3-0.4).
Background technology
Magnetostriction materials can be used as sensor, the high-precision equipments such as inductor block, therefore have very high using value.Current research shows, the phase transformation of induced by magnetic field is likely with considerable magnetostrictive effect.In NiMn base ferromagnetic shape memory alloys (NiMnIn, NiMnSn, NiMnSb), the one-level magnetic structure phase transformation of NiMnIn alloy induced by magnetic field can produce the dependent variable of about 0.25%.But due to the feature of first-order phase transition, the strain of this induced by magnetic field is usually with larger magnetic hysteresis and irrecoverability.Compared to magnetic structure phase transformation, the adjoint magnetostrictive effect of magnetoelasticity phase transformation has restorative preferably usually, such as La (Fe
1-xsi
x)
13and Gd
5si
4-xge
xalloy.But the material with magnetoelasticity phase transformation has (1) transformation temperature usually not in room temperature; (2) phase transformation critical magnetic field is too high; And the defect such as (3) magnetic hysteresis is larger.Therefore find one and have the phase transformation of room temperature magnetoelasticity, low critical magnetic field, the material of little magnetic hysteresis has very high meaning.
Summary of the invention
The object of the invention is, provide a kind of alloy material with room temperature magnetostrictive effect: Gd
1-xsm
xmn
2ge
2(x=0.3-0.4).
Technical scheme of the present invention: a kind of alloy material with room temperature magnetostrictive effect, by gadolinium (Gd), samarium (Sm), manganese (Mn), germanium (Ge) four kinds of metal compositions, molecular formula is Gd
1-xsm
xmn
2ge
2(x=0.3-0.4); Especially x=0.37,0.34.
(1) the magnetoelasticity phase transformation of temperature and induced by magnetic field occurs near room temperature (270K-300K).
(2) phase transformation critical magnetic field is lower than 1T, and magnetic hysteresis very little (about 300Oe).
(3) the magnetoelasticity phase transformation of induced by magnetic field is with considerable magnetostrictive effect (about 900ppm).
The invention has the beneficial effects as follows: experiment and measurement show, by regulating the ratio of Gd and Sm, especially as x=0.37 and 0.34, the magnetoelasticity phase transformation of temperature and induced by magnetic field occurs in room temperature.In phase transition process, the amount of distortion of lattice a axle is 0.16%.Room temperature magnetostriction is about 900ppm.
Accompanying drawing explanation
Fig. 1: Gd
0.66sm
0.34mn
2ge
2(Gd
66sm
34) and Gd
0.63sm
0.37mn
2ge
2(Gd
63sm
37) thermomagnetization curve of alloy.
Fig. 2: Gd
66sm
34(Fig. 2 a) and Gd
63sm
37the metamagnetism behavior of (Fig. 2 b) alloy.
Fig. 3: Gd
66sm
34(Fig. 3 a) and Gd
63sm
37(Fig. 3 b) alloy is in the lattice distortion of phase transition temperature interval.
Fig. 4: Gd
66sm
34(Fig. 4 a) and Gd
63sm
37(Fig. 4 b) alloy is at the Magnetostriction of near room temperature.
Embodiment
A kind of alloy material with room temperature magnetostrictive effect of the present invention, it is by gadolinium (Gd), samarium (Sm), manganese (Mn), germanium (Ge) four kinds of metal compositions, molecular formula is Gd1-xSmxMn2Ge2 (x=0.3-0.4); Especially x=0.37,0.34.According to alloy molecular formula Gd1-xSmxMn2Ge2 (x=0.3-0.4), exact weight gadolinium (Gd), samarium (Sm), manganese (Mn), germanium (Ge) elemental metals, and being smelted into uniform alloy pig with Conventional alloys smelting process, the temperature of melting can get 1500-1900 DEG C; Gadolinium (Gd), samarium (Sm) is rare earth metal.
Claims (2)
1. have an alloy material for room temperature magnetostrictive effect, it is characterized in that by gadolinium (Gd), samarium (Sm), manganese (Mn), germanium (Ge) four kinds of metal compositions, molecular formula is Gd
1-xsm
xmn
2ge
2(x=0.3-0.4).
2. the alloy material with room temperature magnetostrictive effect according to claim 1, is characterized in that x=0.37,0.34;
1) the magnetoelasticity phase transformation of temperature and induced by magnetic field occurs in 270 K-300 K;
2) phase transformation critical magnetic field is lower than 1 T, and magnetic hysteresis about 300 Oe;
3) the magnetoelasticity phase transformation of induced by magnetic field is with magnetostrictive effect about 900 ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719517.6A CN104498802A (en) | 2014-12-01 | 2014-12-01 | Alloy material with room-temperature magnetostrictive effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719517.6A CN104498802A (en) | 2014-12-01 | 2014-12-01 | Alloy material with room-temperature magnetostrictive effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104498802A true CN104498802A (en) | 2015-04-08 |
Family
ID=52940252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410719517.6A Pending CN104498802A (en) | 2014-12-01 | 2014-12-01 | Alloy material with room-temperature magnetostrictive effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104498802A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101388433A (en) * | 2007-09-14 | 2009-03-18 | 有研稀土新材料股份有限公司 | Cementing magnetostrictive material and preparation thereof |
-
2014
- 2014-12-01 CN CN201410719517.6A patent/CN104498802A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101388433A (en) * | 2007-09-14 | 2009-03-18 | 有研稀土新材料股份有限公司 | Cementing magnetostrictive material and preparation thereof |
Non-Patent Citations (2)
| Title |
|---|
| M. DURAJ: "《Magnetic phase diagram of the Sm1-xGdxMn2Ge2 system》", 《JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS》, vol. 79, no. 1, 31 May 1989 (1989-05-31) * |
| PRAMOD KUMAR: "《Multiple magnetic transitions and the magnetocaloric effect in Gd1-xSmxMn2Ge2 compounds》", 《JOURNAL OF PHYSICS: CONDENSED MATTER》, vol. 19, no. 38, 31 August 2007 (2007-08-31) * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |
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| RJ01 | Rejection of invention patent application after publication |