RAMAN-SPECTROSCOPY OF THE ZONE CENTER IMPROPER FERROELASTIC TRANSITION IN ORDERED BA(Y(1/2)TA(1/2))O-3 COMPLEX PEROVSKITE CERAMIC

被引：33

作者：

GREGORA, I ^{[1
]}

PETZELT, J ^{[1
]}

POKORNY, J ^{[1
]}

VORLICEK, V ^{[1
]}

ZIKMUND, Z ^{[1
]}

机构：

[1] ECOLE POLYTECH FED LAUSANNE, CERAM LAB, MX C ECUBLENS, CH-1015 LAUSANNE, SWITZERLAND

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 94卷 / 11期

关键词：

FERROELECTRICS; PHASE TRANSITIONS; PHONONS; INELASTIC LIGHT SCATTERING;

D O I：

10.1016/0038-1098(95)00192-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Recent structural studies have revealed a cubic-tetragonal transition in some ordered Ba(B-1/2'B-1/2'')O-3 perovskite ceramics. We confirmed the displacive improper ferroelastic nature of this transition without unit-cell multiplication by Raman spectroscopy on ceramic Ba(Y1/2Ta1/2)O-3 revealing a soft phonon mode only in the tetragonal phase. The transition is analogous to the well-known structural transition in simple perovskite SrTiO3.

引用

页码：899 / 903

页数：5

共 10 条

[1]

[Anonymous], 1981, STRUCTURAL PHASE TRA

[2]

[Anonymous], 1969, STRUCTURE PROPERTIES

[3] CLASSIFICATION OF TILTED OCTAHEDRA IN PEROVSKITES [J].

GLAZER, AM .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1972, B 28 (NOV15) :3384-&

[4] SYMMETRY CLASSIFICATION AND PROPERTIES OF EQUI-TRANSLATION STRUCTURAL PHASE-TRANSITIONS [J].

JANOVEC, V ;

DVORAK, V ;

PETZELT, J .

CZECHOSLOVAK JOURNAL OF PHYSICS, 1975, 25 (12) :1362-1396

[5] DIELECTRIC-SPECTROSCOPY OF SOME BA(B'1/2B''1/2)O3 COMPLEX PEROVSKITES IN THE 10(11)-10(14)HZ RANGE [J].

PETZELT, J ;

ZURMUHLEN, R ;

BELL, A ;

KAMBA, S ;

KOZLOV, GV ;

VOLKOV, AA ;

SETTER, N .

FERROELECTRICS, 1992, 133 (1-4) :205-210

[6]

Salje EKH., 1990, PHASE TRANSITIONS FE

[7] REVISED VALUES OF EFFECTIVE IONIC RADII [J].

SHANNON, RD ;

PREWITT, CT .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1970, B 26 :1046-&

[8]

ZIKMUND Z, IN PRESS

[9] STRUCTURE OF BA(Y1/2(+3)TA1/2(+5))O-3 AND ITS DIELECTRIC-PROPERTIES IN THE RANGE 10(2)-10(14)-HZ, 20-600-K [J].

ZURMUHLEN, R ;

COLLA, E ;

DUBE, DC ;

PETZELT, J ;

REANEY, I ;

BELL, A ;

SETTER, N .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (10) :5864-5873

[10]

ZURMUHLEN R, IN PRESS J APPL PHYS

← 1 →