CN102173766A - Bismuth ferrite-sodium bismuth ferrite niobate multiferroic ceramic and preparation method thereof - Google Patents
Bismuth ferrite-sodium bismuth ferrite niobate multiferroic ceramic and preparation method thereof Download PDFInfo
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- CN102173766A CN102173766A CN2011100062625A CN201110006262A CN102173766A CN 102173766 A CN102173766 A CN 102173766A CN 2011100062625 A CN2011100062625 A CN 2011100062625A CN 201110006262 A CN201110006262 A CN 201110006262A CN 102173766 A CN102173766 A CN 102173766A
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- bismuth ferrite
- acid bismuth
- sodium
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- niobium
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Abstract
The invention discloses a bismuth ferrite-sodium bismuth ferrite niobate multiferroic ceramic and a preparation method thereof. The bismuth ferrite-sodium bismuth ferrite niobate multiferroic ceramic has the following chemical composition general formula: (1-x)BiFeO3-x(Bi0.5Na0.5)(Nb0.5Fe0.5)O3, wherein x is more than 0 or less than 0.3 and is a mole fraction. The preparation method comprises the following steps of: previously synthesizing ferric oxide, bismuth oxide, sodium carbonate and niobium pentoxide into sodium bismuth ferrite niobate powder; then blending according to the stoichiometric ratio of (1-x)BiFeO3-x(Bi0.5Na0.5)(Nb0.5Fe0.5)O3, wherein x is more than 0 or less than 0.6; and finally preparing the bismuth ferrite-sodium bismuth ferrite niobate multiferroic ceramic with good ferroelectric-ferromagnetic properties through processes, i.e. ball-milling, molding, binder removal, high-temperature sintering, and the like. Due to the adoption of the preparation method, the problems of low dielectric constant, unstable process, and the like of bismuth ferrite ceramics are solved and the multiferroic material with good ferroelectric and ferromagnetic properties is obtained.
Description
Technical field
The present invention relates to a kind of ferromagnetic-the good ferrous acid bismuth of ferroelectric properties-ferro-niobium acid bismuth sodium pottery and preparation method thereof, belong to electronic ceramic fields.
Background technology
The ferrous acid bismuth has ferroelectricity and ferromegnetism simultaneously, can be induced by electric field and produce magnetic field, and electropolarization, i.e. magnetoelectric effect also can be brought out in magnetic field simultaneously.This magnetic and electricity be controlled at the information storage aspect mutually, the spin electric device aspect, all there is extremely important application prospect [Dibyaranjan Rout Magnetic Sensor and electric capacity-inductor integrated device aspect, Kyoung-Seok Moon, Suk-Joong L.Kang, Temperature-dependent Raman scattering studies of polycrystalline BiFeO
3Bulk ceramics, Journal of Raman Spectroscopy, (2009) 40:618-626].
The subject matter that current ferrous acid bismuth pottery exists has: ferrous acid bismuth synthesis temperature narrow range, decompose easily; Bismuth volatilizees easily; Iron appraises at the current rate easily; The leakage conductance of pottery is too high; Cause deterioration of ferromagnetic property or the like with the minimizing owing to the ferrous acid bi content behind other perovskite materials formation sosoloid.
Summary of the invention
In order to overcome problem such as ferrous acid bismuth processing performance and ferromagnetic property difference in the prior art, the invention provides ferrous acid bismuth sodium-ferro-niobium acid bismuth sodium pottery of a kind of ferroelectric-ferromagnetic excellent property and preparation method thereof, employing ferro-niobium acid bismuth sodium and ferrous acid bismuth are compounded to form sosoloid and high temperature is gone into furnaceman's skill, makes its ferromagnetic property and processing performance all obtain improving greatly.
Technical scheme of the present invention is:
The chemical constitution general formula of ferrous acid bismuth-many iron of ferro-niobium acid bismuth sodium pottery is: (1-x) BiFeO
3-x (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3, wherein: 0＜x＜0.6, x is a molar fraction.
Concrete preparation method is:
(1), be (Bi by stoichiometric ratio at first with ferric oxide, bismuthous oxide bismuth trioxide, yellow soda ash, Niobium Pentxoxide
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching adopts traditional process for solid phase synthesis to prepare ferro-niobium acid bismuth sodium ceramic powder; Being raw material with ferric oxide, bismuthous oxide bismuth trioxide, ferro-niobium acid bismuth sodium again, is (1-x) BiFeO by stoichiometric ratio
3-x (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching, wherein: 0＜x＜0.6;
(2) material that step (1) is prepared is put into the ball mill batch mixing, requires to mix, and obtains the ball milling material;
(3) adopt the air-stream spraying tablets press that the ball milling material is carried out granulation, obtain particle diameter and be 0.001～1 millimeter powder granule;
(4) powder granule that step (3) is obtained is put into press and is pressed into ceramic body;
(5) base substrate of step (4) moulding is put into the stove binder removal, after binder removal finished, furnace cooling obtained plain sheet;
(6) stove is warming up to 750～1100 ℃ in advance, and plain sheet is put into sintering oven, is incubated 0.1～1 hour, takes out then, makes ferrous acid bismuth-ferro-niobium acid bismuth sodium pottery.
The invention has the beneficial effects as follows: owing to adopted ferro-niobium acid bismuth sodium to form sosoloid with the ferrous acid bismuth as second, because second contains bismuth element and ferro element in mutually, therefore compare with other perovskite compounds, under the identical solid solution capacity situation, contain more bismuth and iron in this system solid solution, therefore neither can reduce the magnetic property of ferrous acid bismuth, also can improve technology stability, dielectric properties and the ferroelectric properties of ferrous acid bismuth system greatly.Adopt high temperature to go into stove, short period of time heat preservation method, can significantly reduce the appearance of dephasign.Therefore the present invention has not only improved problems such as the low and technology instability of the specific inductivity of pottery of ferrous acid bismuth, but also has obtained ferroelectric and all good multi-iron material of ferromagnetic property.
Description of drawings
Fig. 1 is 0.98BiFeO of the present invention
3-0.02 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3The dielectric temperature spectrum of pottery.
Fig. 2 is 0.80BiFeO of the present invention
3-0.20 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3The dielectric temperature spectrum of pottery.
Fig. 3 is 0.45BiFeO of the present invention
3-0.55 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3The dielectric temperature spectrum of pottery.
Embodiment
Embodiment 1:
With ferric oxide, bismuthous oxide bismuth trioxide, yellow soda ash, Niobium Pentxoxide, be (Bi by stoichiometric ratio
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching adopts traditional process for solid phase synthesis to prepare ferro-niobium acid bismuth sodium ceramic powder; Being raw material with ferric oxide, bismuthous oxide bismuth trioxide, ferro-niobium acid bismuth sodium again, is 0.98BiFeO by stoichiometric ratio
3-0.02 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching.The material for preparing is put into the ball mill batch mixing, require to mix, obtain the ball milling material; Adopt the air-stream spraying tablets press that the ball milling material is carried out granulation, obtain particle diameter and be 0.001～1 millimeter powder granule; The powder granule that obtains is put into press be pressed into ceramic body; The base substrate of moulding is put into the stove binder removal, and after binder removal finished, furnace cooling obtained plain sheet; Plain sheet put into rise to 800 ℃ of sintering ovens in advance, be incubated 0.1 hour, take out then, make 0.98BiFeO
3-0.02 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Pottery.Fig. 1 has provided 0.98BiFeO
3-0.02 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3The dielectric temperature spectrum of pottery.
Embodiment 2:
With ferric oxide, bismuthous oxide bismuth trioxide, yellow soda ash, Niobium Pentxoxide, be (Bi by stoichiometric ratio
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching adopts traditional process for solid phase synthesis to prepare ferro-niobium acid bismuth sodium ceramic powder; Being raw material with ferric oxide, bismuthous oxide bismuth trioxide, ferro-niobium acid bismuth sodium again, is 0.80BiFeO by stoichiometric ratio
3-0.20 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching.The material for preparing is put into the ball mill batch mixing, require to mix, obtain the ball milling material; Adopt the air-stream spraying tablets press that the ball milling material is carried out granulation, obtain particle diameter and be 0.001～1 millimeter powder granule; The powder granule that obtains is put into press be pressed into ceramic body; The base substrate of moulding is put into the stove binder removal, and after binder removal finished, furnace cooling obtained plain sheet; Plain sheet put into rise to 950 ℃ of sintering ovens in advance, be incubated 0.7 hour, take out then, make 0.80BiFeO
3-0.20 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Pottery.Fig. 2 has provided 0.80BiFeO
3-0.20 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3The dielectric temperature spectrum of pottery.
Embodiment 3:
With ferric oxide, bismuthous oxide bismuth trioxide, yellow soda ash, Niobium Pentxoxide, be (Bi by stoichiometric ratio
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching adopts traditional process for solid phase synthesis to prepare ferro-niobium acid bismuth sodium ceramic powder; Being raw material with ferric oxide, bismuthous oxide bismuth trioxide, ferro-niobium acid bismuth sodium again, is 0.45BiFeO by stoichiometric ratio
3-0.55 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching.The material for preparing is put into the ball mill batch mixing, require to mix, obtain the ball milling material; Adopt the air-stream spraying tablets press that the ball milling material is carried out granulation, obtain particle diameter and be 0.001～1 millimeter powder granule; The powder granule that obtains is put into press be pressed into ceramic body; The base substrate of moulding is put into the stove binder removal, and after binder removal finished, furnace cooling obtained plain sheet; Plain sheet put into rise to 1100 ℃ of sintering ovens in advance, be incubated 1 hour, take out then, make 0.45BiFeO
3-0.55 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Pottery.Fig. 3 has provided 0.45BiFeO
3-0.55 (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3The dielectric temperature spectrum of pottery.
Claims (2)
1. ferrous acid bismuth-many iron of ferro-niobium acid bismuth sodium pottery is characterized in that the chemical constitution general formula is: (1-x) BiFeO
3-x (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3, wherein: 0＜x＜0.6, x is a molar fraction.
2. the preparation method of ferrous acid bismuth as claimed in claim 1-many iron of ferro-niobium acid bismuth sodium pottery is characterized in that the preparation method is:
(1), be (Bi by stoichiometric ratio at first with ferric oxide, bismuthous oxide bismuth trioxide, yellow soda ash, Niobium Pentxoxide
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching adopts traditional process for solid phase synthesis to prepare ferro-niobium acid bismuth sodium ceramic powder; Being raw material with ferric oxide, bismuthous oxide bismuth trioxide, ferro-niobium acid bismuth sodium again, is (1-x) BiFeO by stoichiometric ratio
3-x (Bi
0.5Na
0.5) (Nb
0.5Fe
0.5) O
3Batching, wherein: 0＜x＜0.6;
(2) material that step (1) is prepared is put into the ball mill batch mixing, requires to mix, and obtains the ball milling material;
(3) adopt the air-stream spraying tablets press that the ball milling material is carried out granulation, obtain particle diameter and be 0.001～1 millimeter powder granule;
(4) powder granule that step (3) is obtained is put into press and is pressed into ceramic body;
(5) base substrate of step (4) moulding is put into the stove binder removal, after binder removal finished, furnace cooling obtained plain sheet;
(6) stove is warming up to 750～1100 ℃ in advance, and plain sheet is put into sintering oven, is incubated 0.1～1 hour, takes out then, makes ferrous acid bismuth-ferro-niobium acid bismuth sodium pottery.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500764A (en) * | 2017-08-09 | 2017-12-22 | 上海师范大学 | Lead magnesio-niobate lead titanates bismuth ferrite multiferroic ceramic material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1950188A1 (en) * | 2005-10-27 | 2008-07-30 | Kyocera Corporation | Piezoelectric ceramic composition and piezoelectric ceramic |
| CN101423391A (en) * | 2008-11-12 | 2009-05-06 | 桂林电子科技大学 | Novel potassium niobate sodium base leadless piezoelectric ceramics and preparation method thereof |
| CN101891474A (en) * | 2010-07-08 | 2010-11-24 | 桂林理工大学 | Potassium-sodium niobate-sodium potassium bismuth titanate piezoelectric ceramics and preparation method thereof |
-
2011
- 2011-01-11 CN CN2011100062625A patent/CN102173766A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1950188A1 (en) * | 2005-10-27 | 2008-07-30 | Kyocera Corporation | Piezoelectric ceramic composition and piezoelectric ceramic |
| CN101423391A (en) * | 2008-11-12 | 2009-05-06 | 桂林电子科技大学 | Novel potassium niobate sodium base leadless piezoelectric ceramics and preparation method thereof |
| CN101891474A (en) * | 2010-07-08 | 2010-11-24 | 桂林理工大学 | Potassium-sodium niobate-sodium potassium bismuth titanate piezoelectric ceramics and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| CHAO-CHAO ZHOU ET AL.: "Magnetic and dielectric properties of BiFeO3-La1/3Sr2/3MnO3 hybrid composite ceramics", 《SOLID STATE COMMUNICATIONS》, vol. 150, 12 May 2010 (2010-05-12) * |
| YAN MA ET AL.: "Enhanced multiferroic characteristics in NaNbO3-modified BiFeO3 ceramics", 《JOURNAL OF APPLIED PHYSICS》, vol. 105, no. 5, 11 March 2009 (2009-03-11), XP012119996, DOI: doi:10.1063/1.3081648 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500764A (en) * | 2017-08-09 | 2017-12-22 | 上海师范大学 | Lead magnesio-niobate lead titanates bismuth ferrite multiferroic ceramic material and preparation method thereof |
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Application publication date: 20110907 |