UNDERDAMPED SOFT PHONON IN ORTHORHOMBIC BATIO3

被引：53

作者：

LAABIDI, K ^{[1
]}

FONTANA, MD ^{[1
]}

JANNOT, B ^{[1
]}

机构：

[1] UNIV BOURGOGNE,PHYS SOLIDE LAB,CNRS,URA 785,F-21004 DIJON,FRANCE

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 76卷 / 06期

关键词：

D O I：

10.1016/0038-1098(90)90623-J

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Raman scattering measurements are reported in orthorhombic phase and through the orthorhombic-rhombohedral transition of BaTiO3. Spectra reveal the presence of an underdamped low frequency phonon which slightly softens with decreasing temperature and abruptly stiffens at the transition to the rhombohedral phase. Results are discussed in comparison with isomorphous KNbO3 and tetragonal BaTiO3 and are interpreted as due to a dominant displacive mechanism. © 1990.

引用

页码：765 / 768

页数：4

共 19 条

[1] LATTICE MODES IN FERROELECTRIC PEROVSKITES .3. SOFT MODES IN BATIO3
BURNS, G
DACOL, FH
[J]. PHYSICAL REVIEW B, 1978, 18 (10): : 5750 - 5755
[2] DIDOMENICO M, 1968, PHYS REV, V174, P522, DOI 10.1103/PhysRev.174.522
[3] Fontana M. D., 1984, J PHYS C SOLID STATE, V16, P483
[4] DIELECTRIC-DISPERSION AND CRITICAL-DYNAMICS IN FERROELECTRICS
FONTANA, MD
KUGEL, GE
[J]. FERROELECTRICS, 1987, 76 (3-4) : 269 - 276
[5] THE INTRINSIC CENTRAL PEAK AT THE STRUCTURAL PHASE-TRANSITIONS IN KNBO3
FONTANA, MD
RIDAH, A
KUGEL, GE
CARABATOSNEDELEC, C
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1988, 21 (34): : 5853 - 5879
[6] FONTANA MD, UNPUB
[7] FONTANA MP, COMMUNICATION
[8] HYPER-RAMAN SCATTERING SPECTRA IN THE LOW-FREQUENCY RANGE IN CUBIC BATIO3 AND THE MECHANISM OF THE PHASE-TRANSITION
INOUE, K
AKIMOTO, S
[J]. SOLID STATE COMMUNICATIONS, 1983, 46 (06) : 441 - 445
[9] PHONONS IN CUBIC BATIO3 AND BAO.8SRO.2TIO3
JANNOT, B
BOUILLOT, J
ESCRIBEFILIPPINI, C
[J]. FERROELECTRICS, 1981, 37 (1-4) : 511 - 512
[10] LUSPIN Y, 1980, J PHYS C SOLID STATE, V13, P3769

← 1 2 →