Calcium substituting B-site in relaxor ferroelectrics with perovskite structure probed by chemical ordering

Ni Zhong; Wen Long Yao; Ping Hua Xiang; Chu De Feng; Seiji Kojima

doi:10.1016/j.ssc.2005.01.038

Calcium substituting B-site in relaxor ferroelectrics with perovskite structure probed by chemical ordering

Ni Zhong^*
, Wen Long Yao
, Ping Hua Xiang
, Chu De Feng
, Seiji Kojima

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Chemical ordering of Ca²⁺ doped 0.9Pb(Mg_1/3Nb _2/3)O₃-0.1PbTiO₃ ceramics were investigated by dielectric spectra, TEM diffraction and A_1g mode in Raman spectra. It is found degree of relaxor behavior increases first, and then decreases. It conflicts the prediction Ca²⁺ substitutes for A-site ion Pb ²⁺ according to crystal chemistry theory. In this letter, a new mechanism that Ca²⁺ substitutes for B-site ions has been proposed, which satisfactorily explained change of chemical ordering. It exhibits strong evidence doped ions with larger ionic radius (Ca²⁺) are quite possibly substitute much smaller ones (Nb⁵⁺ or Ti⁴⁺) in B-site rather than all substitute larger A-site ion in relaxor ferroelectrics.

Original language	English
Pages (from-to)	425-429
Number of pages	5
Journal	Solid State Communications
Volume	134
Issue number	6
DOIs	https://doi.org/10.1016/j.ssc.2005.01.038
State	Published - May 2005
Externally published	Yes

Keywords

A. PMN-PT ceramics
D. Chemical order
D. Dielectric properties

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10.1016/j.ssc.2005.01.038

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title = "Calcium substituting B-site in relaxor ferroelectrics with perovskite structure probed by chemical ordering",

abstract = "Chemical ordering of Ca2+ doped 0.9Pb(Mg1/3Nb 2/3)O3-0.1PbTiO3 ceramics were investigated by dielectric spectra, TEM diffraction and A1g mode in Raman spectra. It is found degree of relaxor behavior increases first, and then decreases. It conflicts the prediction Ca2+ substitutes for A-site ion Pb 2+ according to crystal chemistry theory. In this letter, a new mechanism that Ca2+ substitutes for B-site ions has been proposed, which satisfactorily explained change of chemical ordering. It exhibits strong evidence doped ions with larger ionic radius (Ca2+) are quite possibly substitute much smaller ones (Nb5+ or Ti4+) in B-site rather than all substitute larger A-site ion in relaxor ferroelectrics.",

keywords = "A. PMN-PT ceramics, D. Chemical order, D. Dielectric properties",

author = "Ni Zhong and Yao, \{Wen Long\} and Xiang, \{Ping Hua\} and Feng, \{Chu De\} and Seiji Kojima",

year = "2005",

month = may,

doi = "10.1016/j.ssc.2005.01.038",

language = "英语",

volume = "134",

pages = "425--429",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd",

number = "6",

}

TY - JOUR

T1 - Calcium substituting B-site in relaxor ferroelectrics with perovskite structure probed by chemical ordering

AU - Zhong, Ni

AU - Yao, Wen Long

AU - Xiang, Ping Hua

AU - Feng, Chu De

AU - Kojima, Seiji

PY - 2005/5

Y1 - 2005/5

N2 - Chemical ordering of Ca2+ doped 0.9Pb(Mg1/3Nb 2/3)O3-0.1PbTiO3 ceramics were investigated by dielectric spectra, TEM diffraction and A1g mode in Raman spectra. It is found degree of relaxor behavior increases first, and then decreases. It conflicts the prediction Ca2+ substitutes for A-site ion Pb 2+ according to crystal chemistry theory. In this letter, a new mechanism that Ca2+ substitutes for B-site ions has been proposed, which satisfactorily explained change of chemical ordering. It exhibits strong evidence doped ions with larger ionic radius (Ca2+) are quite possibly substitute much smaller ones (Nb5+ or Ti4+) in B-site rather than all substitute larger A-site ion in relaxor ferroelectrics.

AB - Chemical ordering of Ca2+ doped 0.9Pb(Mg1/3Nb 2/3)O3-0.1PbTiO3 ceramics were investigated by dielectric spectra, TEM diffraction and A1g mode in Raman spectra. It is found degree of relaxor behavior increases first, and then decreases. It conflicts the prediction Ca2+ substitutes for A-site ion Pb 2+ according to crystal chemistry theory. In this letter, a new mechanism that Ca2+ substitutes for B-site ions has been proposed, which satisfactorily explained change of chemical ordering. It exhibits strong evidence doped ions with larger ionic radius (Ca2+) are quite possibly substitute much smaller ones (Nb5+ or Ti4+) in B-site rather than all substitute larger A-site ion in relaxor ferroelectrics.

KW - A. PMN-PT ceramics

KW - D. Chemical order

KW - D. Dielectric properties

UR - https://www.scopus.com/pages/publications/15544385944

U2 - 10.1016/j.ssc.2005.01.038

DO - 10.1016/j.ssc.2005.01.038

M3 - 文章

AN - SCOPUS:15544385944

SN - 0038-1098

VL - 134

SP - 425

EP - 429

JO - Solid State Communications

JF - Solid State Communications

IS - 6

ER -

Calcium substituting B-site in relaxor ferroelectrics with perovskite structure probed by chemical ordering

Abstract

Keywords

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