CN1142475A - La doped lead niobate base electrostrictive ceramics - Google Patents
La doped lead niobate base electrostrictive ceramics Download PDFInfo
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- CN1142475A CN1142475A CN 95111717 CN95111717A CN1142475A CN 1142475 A CN1142475 A CN 1142475A CN 95111717 CN95111717 CN 95111717 CN 95111717 A CN95111717 A CN 95111717A CN 1142475 A CN1142475 A CN 1142475A
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- doping
- lead
- lanthanum
- magnoniobate
- electrostriction
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Abstract
An electrostrictive ceramic doped with La and lanthanum lead magnesium-niobate features that doped La element replaces Pb to obviously increase strain effect. Its chemical formula is YPb1-xLaxMg1/3Nb2/3O3-(1-Y)PbTiO3, where X is the grammols of doped La and greater than O but equal to or less than 0.1 and Y is the grammols of lanthanum lead magnesium-niobate and greater than or equal to 0.80 but less than 1.
Description
What the present invention relates to is the electrostriction ceramics material that magnoniobate lead base electrostriction ceramics material, particularly lead magnoniobate and lead titanate are formed, and belongs to the electrostriction ceramics material and forms.
Electrostriction material is the ferroelectric material that a class has the diffusion phase change characteristics.So-called electrostrictive effect is meant the telescopic shape change phenomenon that electric field causes, is solid dielectric induced polarization and a kind of physical phenomenon of occurring under External Electrical Field.
Square being directly proportional of electrostriction strain S (Δ L/L) and electrostriction coefficient M and electric field strength E, i.e. S=ME
2Found lead magnoniobate Pb (Mg as far back as 1970's Mo people
1/3Nb
2/3) O
3(being abbreviated as PMN) has typical ferroelectric para-electric diffusion phase transformation, thereby has tangible electrostriction phenomena.But because of the Curie temperature (Tc) lower (20 ℃) of pure PMN, desire at high temperature to use the modification of still needing, thereby to have occurred be the study on the modification of base, wherein 0.9Pb (Mg with PMN
1/3Nb
2/3) O
3-0.1PbTiO
3It is the pottery of early finding the electrostrictive effect that has.When the 1KV/mm field intensity, dependent variable can reach (0.82-0.87) * 10 under the room temperature
-3, but the automatically controlled displacement driver practicality of hysteresis wonderful works aspect remains in problem.
The object of the present invention is to provide a kind of new electrostriction ceramics material, it is big that it has an electric field induced strain, and it is little to lag behind, and responds fast characteristics.
The objective of the invention is to form new electrostriction ceramics material with lead titanate by the lead in lanthanum (La) the element doping displacement lead magnoniobate.The doping of La not only can be avoided the appearance to the green stone phase of disadvantageous Jiao of dielectric properties, and makes the material uniform microstructure, thereby has good electrostrictive property.
It is specifically, provided by the invention that to mix lanthanum magnoniobate lead base electrostriction ceramics material general formula be YPb
1-xLa
x(Mg
1/3Nb
2/3) O
3-(1-Y) PbTiO
3
X is the doping of La in the formula, 0≤X≤0.1
Y is the gram molecular weight of lead magnoniobate lanthanum, 0.8≤Y＜1
Magnoniobate lead base pottery is with the increase of lead titanate add-on, and Curie temperature raises and La mixes and substitutes Pb and can reduce Curie temperature.An amount of La element mixes and can stop crystal grain to be grown up unusually, makes grain size be tending towards evenly helping stablizing the electrostriction material of processability unanimity.But the La doping should be not too much, otherwise cause Jiao Lvshi to occur mutually and excessively suppress grain growing, and the dielectric of material and electrostrictive property are descended.
Mix the PMN-PT material of La and compare with present use 0.9PMN-0.1PT material, electrostriction answers apparition to increase.
The PMN-PT material of La of mixing provided by the invention is by general electrostriction ceramics prepared.
At first synthetic MgNb
2O
6, synthesis temperature is 1000 ℃, is incubated 6 hours;
(2) with synthetic MgNb
2O
6Powder, with PbO, La
2O
3, TiO
2Powder is pressed YPb
1-xLa
xMg
1/3Nb
2/3O
3-(1-Y) PbTiO
3Ratio adds that water for ball milling batch mixing 16 hours oven dry is sieved and dry-pressing becomes piece in 850 ℃ of Synthetic 2s hour.
(3) the material fine grinding once more after synthetic, the oven dry PVA adhesive cool that adds 0.5wt% that sieves is pressed into the garden sheet, burns till at 1150-1250 ℃.
Material provided by the invention has following advantage with the existing 0.9PMN-0.1PT material of not mixing La:
(1) strain value obviously increases and lags behind little under identical electric field (1KV/mm);
(2) doping of La can make Jie's temperature curve of material, and is comparatively smooth near Curie temperature, thereby the temperature stability of material is improved;
(3) doping of La inhibition crystal grain is grown up unusually, helps the stable electrostriction ceramics material of processability.
The prescription of the embodiment of the invention 1～8 and performance thereof are all listed in table 1, the aforesaid general technology preparation of its preparation method.
Fig. 1 is 0.82Pb
1-xa
xMg
1/3Nb
2/3O
3-0.18PbTiO
3Pottery is through 1200 ℃ of agglomerating warm curve that is situated between, curve 1X=0; Curve 2X=0.02; Curve 3X=0.03
Abscissa be temperature (℃), ordinate is specific inductivity K.As can be seen from Figure, with the add-on increase of La, the dielectric honeybee in the temperature that the is situated between spectrum varies with temperature smooth more, so the temperature stability of material improves.
Fig. 2 forms 7 electric field induced strain curve in the table 1, it is little to lag behind, and has good electrostrictive property.
| Numbering | Form | The center Curie temperature | The specific inductivity peak value | Loss | Strain (1KV/mm) | Lag behind | |
| ?????X | ?????Y | ????Tc(℃) | ????Kmax | ?tgδ(％) | ?????S×10 -3 | ?ΔSm/Sm(％) | |
| ???1 | ?????0 | ???0.85 | ????74.2 | ????24685 | ????9.1 | ??????1.0 | ??????56 |
| ???2 | ????0.01 | ???0.85 | ????45.3 | ????16300 | ????12.4 | ??????0.94 | ?????6.6 |
| ???3 | ????0.02 | ???0.85 | ?????23 | ????1590Q | ????6.1 | ??????0.6 | ?????2.9 |
| ???4 | ?????0 | ???0.82 | ????92.7 | ????29000 | ????4.9 | ??????1.2 | ??????60 |
| ???5 | ????0.01 | ???0.82 | ????62.5 | ????28480 | ????7.8 | ??????1.3 | ??????45 |
| ???6 | ????0.015 | ???0.82 | ????53.7 | ????26400 | ????9.3 | ??????1.2 | ?????10.2 |
| ???7 | ????0.02 | ???0.82 | ????44.5 | ????25000 | ????7.0 | ??????0.94 | ?????4.4 |
| ???8 | ????0.03 | ???0.82 | ????30.5 | ????18500 | ????4.7 | ??????0.55 | ?????1.4 |
Claims (4)
1, a kind of is the electrostrictive stupalith of base with the lead magnoniobate, it is characterized in that lanthanum element doped and substituted lead, consists of:
YPb
1－xLa
xMg
1/3Nb
2/3O
3--(1-Y)PbTiO
3
Wherein X is doping gram molecular weight 0＜X≤0.1 of La
Y is the gram molecular weight of lead magnoniobate lanthanum, 0.80≤Y＜1
2, by the described electrostriction ceramics material of claim 1, the doping that it is characterized in that described La is 0.01 mol, and the lead magnoniobate lanthanum is that 0.85 mol consists of:
0.85Pb
0.99La
0.01Mg
1/3Nb
2/3O
3-0.15PbTiO
3
3,, it is characterized in that doping 0.02 mol of described La by the described electrostriction ceramics material of claim 1; The lead magnoniobate lanthanum is 0.85 mol, consists of:
0.85Pb
0.98La
0.02Mg
1/3Nb
2/3O
3-0.15PbTiO
3
4, by the described electrostriction ceramics material of claim 1, it is characterized in that described La doping gram molecular weight is respectively 0.01,0.015,0.02,0.03, the doping gram molecular weight of lead magnoniobate lanthanum is 0.82, and composition is respectively:
0.82Pb
0.99La
0.01Mg
1/3Nb
2/3O
3-0.18PbTiO
3
0.82Pb
0.985La
0.015Mg
1/3Nb
2/3O
3-0.18PbTiO
3
0.82Pb
0.98La
0.02Mg
1/3Nb
2/3O
3-0.18PbTiO
3
0.82Pb
0.97La
0.03Mg
1/3Nb
2/3O
3-0.18PbTiO
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95111717A CN1059185C (en) | 1995-08-04 | 1995-08-04 | La doped lead niobate base electrostrictive ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95111717A CN1059185C (en) | 1995-08-04 | 1995-08-04 | La doped lead niobate base electrostrictive ceramics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1142475A true CN1142475A (en) | 1997-02-12 |
| CN1059185C CN1059185C (en) | 2000-12-06 |
Family
ID=5078974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95111717A Expired - Fee Related CN1059185C (en) | 1995-08-04 | 1995-08-04 | La doped lead niobate base electrostrictive ceramics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059185C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064941C (en) * | 1995-11-14 | 2001-04-25 | 株式会社村田制作所 | Piezoelectric ceramics compositions |
| CN102351534A (en) * | 2011-07-04 | 2012-02-15 | 中国科学院上海硅酸盐研究所 | Transparent electrooptical ceramic material with up-conversion luminescent characteristic and its preparation method |
| CN104072136A (en) * | 2014-06-27 | 2014-10-01 | 青岛大学 | Preparation method of lanthanum-doped lead magnesioniobate-lead titanate transparent ceramic |
| CN117049877A (en) * | 2023-10-12 | 2023-11-14 | 佛山仙湖实验室 | Electrostriction ceramic, preparation method thereof and electrostriction device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY104019A (en) * | 1988-05-27 | 1993-10-30 | Mitsui Chemicals Inc | Ferroelectric ceramic material. |
| MY104020A (en) * | 1988-05-27 | 1993-10-30 | Mitsui Chemicals Inc | Ferroelectric ceramic material. |
| CN1025703C (en) * | 1990-10-29 | 1994-08-17 | 湖北大学 | High power piezoelectric ceramic material |
-
1995
- 1995-08-04 CN CN95111717A patent/CN1059185C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064941C (en) * | 1995-11-14 | 2001-04-25 | 株式会社村田制作所 | Piezoelectric ceramics compositions |
| CN102351534A (en) * | 2011-07-04 | 2012-02-15 | 中国科学院上海硅酸盐研究所 | Transparent electrooptical ceramic material with up-conversion luminescent characteristic and its preparation method |
| CN104072136A (en) * | 2014-06-27 | 2014-10-01 | 青岛大学 | Preparation method of lanthanum-doped lead magnesioniobate-lead titanate transparent ceramic |
| CN117049877A (en) * | 2023-10-12 | 2023-11-14 | 佛山仙湖实验室 | Electrostriction ceramic, preparation method thereof and electrostriction device |
| CN117049877B (en) * | 2023-10-12 | 2024-01-09 | 佛山仙湖实验室 | Electrostriction ceramic, preparation method thereof and electrostriction device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059185C (en) | 2000-12-06 |
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