Temperature-dependent neutron diffraction study of phase separation at morphotropic phase boundary in (1-x)BiScO3-xPbTiO3

被引：27

作者：

Kim, Bongju ^{[1
,2
]}

Tong, P. ^{[1
,2
]}

Kwon, Daeyoung ^{[1
,2
]}

Park, J. M. S. ^{[3
]}

Kim, Bog G. ^{[1
,2
,4
]}

机构：

[1] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea

[2] Pusan Natl Univ, Res Ctr Dielectr & Adv Matter Phys, Pusan 609735, South Korea

[3] Korea Atom Energy Res Inst, Div Neutron Sci, Taejon 305353, South Korea

[4] Univ Tokyo, Dept Adv Mat Sci, Chiba 2778561, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 11期

关键词：

SOLID-SOLUTION; PIEZOELECTRIC PROPERTIES; TRANSITIONS; MANGANITES; CRYSTALS;

D O I：

10.1063/1.3130402

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

report the results of temperature-dependent neutron powder diffraction experiments on (1-x)BiScO3-xPbTiO(3) (x=0.62, 0.64, and 0.66) within the morphotropic phase boundary. In all samples the monoclinic phase is found to coexist with the tetragonal phase below the ferroelectric transition temperature. The details of structural information demonstrate a delicate balance between the coexisting two phases for x=0.64. Such delicate balance is suggested to be sensitive to an external electric field, thus responsible for the enhanced electromechanical properties observed for x=0.64. Our result reveals that phase separation and the delicate balance between two phases are crucial to understand the unique properties at the morphotropic phase boundary in (1-x)BiScO3-xPbTiO(3) ferroelectric systems. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3130402]

引用

页数：6

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