Microwave dielectric relaxation of ferroelectric PLZT ceramics in the range of 300-900 K

被引：7

作者：

Mouhsen, A ^{[1
]}

Achour, ME

Miane, JL

Ravez, J

机构：

[1] Univ Hassan 1, Fac Sci & Tech, Dept Phys, Settat, Morocco

[2] Univ Moulay Ismail, Fac Sci, Dept Phys, Meknes, Morocco

[3] ENSCPB, PIOM, F-33402 Talence, France

[4] ICMCB, F-33608 Pessac, France

来源：

EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS | 2001年 / 15卷 / 02期

关键词：

Composition effects - Correlation methods - Dielectric losses - Dielectric relaxation - Electromagnetic wave propagation - Heating - High temperature effects - Light reflection - Mathematical models - Microwaves - Natural frequencies - Permittivity;

D O I：

10.1051/epjap:2001171

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Dielectric response of PLZT(x/65/35) ceramics (with x = 0, 2, 4, 5) was studied using radio frequency and microwave techniques in the temperature range 300-900 K and with a frequency range of 10(2) Hz-3 x 10(9) Hz. Dielectric relaxation appears around 1 x 10(9) Hz at room temperature. The relaxation frequency softens at T-c and the dielectric relaxation exists in both paraelectric and ferroelectric phases and depends on x the lanthanum concentration. A model of correlation chains gives some keys for understanding the frequency behaviour of such materials.

引用

页码：97 / 104

页数：8

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