Polar state in epitaxial films of the relaxor ferroelectric PbMg1/3Nb2/3O3 -: art. no. 224101

被引：20

作者：

Tyunina, M ^{[1
]}

Levoska, J

Kundzinsh, K

Zauls, V

机构：

[1] Univ Oulu, Microelect & Mat Phys Labs, PL 4500, FIN-90014 Oulu, Finland

[2] Univ Oulu, Infotech Oulu, EMPART Res Grp, PL 4500, FIN-90014 Oulu, Finland

[3] Univ Latvia, Dept Ferroelect, LV-1063 Riga, Latvia

[4] Univ Latvia, Inst Solid State Phys, CAMART Ctr Excellence, LV-1063 Riga, Latvia

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.69.224101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dielectric response of epitaxial thin films of relaxor PbMg1/3Nb2/3O3 was experimentally studied as a function of frequency, temperature, amplitude of ac electric field, and magnitude of dc bias. At small fields, a glass-like relaxor behavior was observed. With increasing field, an onset of a polar state was detected. Compared to bulk, such an onset was characterized by relatively low threshold fields, short critical time, and reversibility. The orientation of the polar clusters along the direction of the field and the low energy barriers between the stable states of the clusters were suggested to be responsible for the onset.

引用

页码：224101 / 1

页数：10

共 46 条

[1] Dielectric behavior of paraelectric KTaO3, CaTiO3, and (Ln1/2Na1/2) TiO3 under a dc electric field -: art. no. 184104 [J].