Dielectric and ferroelectric properties of lead indium niobate ceramic prepared by wolframite method
The dielectric and ferroelectric properties of lead indium niobate (Pb(In1/2Nb1/2)O3, PIN) ceramic prepared by an oxide-mixing method via wolframite route were investigated. The 98.5% perovskite fine-grained PIN ceramics with average grain sizes of 1-2 μm were obtained by sintering at 1050 °C for 2...
محفوظ في:
| المؤلفون الرئيسيون: | , , , |
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| التنسيق: | مقال |
| اللغة: | English |
| منشور في: |
2014
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| الوصول للمادة أونلاين: | http://www.scopus.com/inward/record.url?eid=2-s2.0-42649141652&partnerID=40&md5=50fa95609d12bcdcff21cb89a1e546a5 http://cmuir.cmu.ac.th/handle/6653943832/5560 |
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| المؤسسة: | Chiang Mai University |
| اللغة: | English |
| الملخص: | The dielectric and ferroelectric properties of lead indium niobate (Pb(In1/2Nb1/2)O3, PIN) ceramic prepared by an oxide-mixing method via wolframite route were investigated. The 98.5% perovskite fine-grained PIN ceramics with average grain sizes of 1-2 μm were obtained by sintering at 1050 °C for 2 h. The dielectric properties of the PIN were of relaxor ferroelectric behavior with temperature of dielectric maximum (Tm) ∼ 53 °C and dielectric constant (εr) ∼ 4300 (at 1 kHz). The P-E hysteresis loop measurements at various temperatures showed that the ferroelectric properties of the PIN ceramic changed gradually from the paraelectric behavior at temperature above Tm to slim-loop type relaxor behavior at temperature below Tm. Moreover, the P-E loop became more open at temperatures much lower than Tm. At -25 °C, the maximum polarization is found to be 8 μm/cm2 at a field of 30 kV/cm, with Pr value of 2.5 μm/cm2 and Ec of +7.5 kV/cm. © 2007 Elsevier Ltd and Techna Group S.r.l. |
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