Morphotropic phase boundary in (1-x)BiFeO3-xPbTiO3:: phase coexistence region and unusually large tetragonality

被引：95

作者：

Bhattacharjee, Shuvrajyoti ^{[1
]}

Tripathi, Saurabh ^{[1
]}

Pandey, Dhananjai ^{[1
]}

机构：

[1] Banaras Hindu Univ, Sch Mat Sci & Technol, Inst Technol, Varanasi 221005, Uttar Pradesh, India

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 04期

关键词：

D O I：

10.1063/1.2766657

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

It is shown that the tetragonal (T) and rhombohedral (R) structures of (1-x)BiFeO3-xPbTiO(3) are stable for x(T)>= 0.31 and x(R)<= 0.27, respectively, giving the narrowest width of 0.03, reported so far, for the morphotropic phase boundary region in this system. The Rietveld refined structure of the T phase for x=0.31 reveals partial covalent character of the Ti/Fe-O and Pb/Bi-O bonds which may be responsible for the unusually large tetragonality. (C) 2007 American Institute of Physics.

引用

页数：3

共 22 条

[1]

BHATTACHARJEE S, UNPUB

[2] Structure and negative thermal expansion in the PbTiO3-BiFeO3 system [J].