Neutron scattering study of antiferromagnetic order in CaCu3Ti4O12

被引：83

作者：

Kim, YJ

Wakimoto, S

Shapiro, SM

Gehring, PM

Ramirez, AP

机构：

[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

[3] MIT, Ctr Mat Sci, Cambridge, MA 02139 USA

[4] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20889 USA

[5] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

SOLID STATE COMMUNICATIONS | 2002年 / 121卷 / 11期

基金：

美国国家科学基金会;

关键词：

magnetically ordered materials; phase transitions; spin dynamics; neutron scattering;

D O I：

10.1016/S0038-1098(02)00061-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magnetism in a single crystal CaCu3Ti4O12 has been studied using elastic and inelastic neutron scattering. We have measured the order parameter of the antiferromagnetic phase transition at T-N = 24.1(1) K. The observed magnetic structure can be consistently described by spins ordered collinearly along the crystallographic [111] direction. A spin wave mode of omega = 7.3(4) meV has been observed and compared with a linear spin wave theory. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：625 / 629

页数：5

共 12 条

[1] SYNTHESIS AND CHARACTERIZATION OF SERIES OF ISOTYPE PEROVSKITE TITANATES OF (CACU3) (MN4)O12 [J].

BOCHU, B ;

DESCHIZEAUX, MN ;

JOUBERT, JC ;

COLLOMB, A ;

CHENAVAS, J ;

MAREZIO, M .

JOURNAL OF SOLID STATE CHEMISTRY, 1979, 29 (02) :291-298

[2] MAGNETIC-PROPERTIES AND STRUCTURE OF CACU3TI4012 WITH PEROVSKITE STRUCTURE [J].

COLLOMB, A ;

SAMARAS, D ;

BOCHU, B ;

JOUBERT, JC .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1977, 41 (02) :459-463

[3]

Goodenough J. B., 1963, MAGNETISM CHEM BOND

[4]

KOITZSCH A, UNPUB

[5] Reduction of ordered moment and Neel temperature of quasi-one-dimensional antiferromagnets Sr2CuO3 and Ca2CuO3 [J].

Kojima, KM ;

Fudamoto, Y ;

Larkin, M ;

Luke, GM ;

Merrin, J ;

Nachumi, B ;

Uemura, YJ ;

Motoyama, N ;

Eisaki, H ;

Uchida, S ;

Yamada, K ;

Endoh, Y ;

Hosoya, S ;

Sternlieb, BJ ;

Shirane, G .

PHYSICAL REVIEW LETTERS, 1997, 78 (09) :1787-1790

[6]

LACROIX C, 1980, J PHYS C SOLID STATE, V13, P2125

[7] THEORY OF SPIN-WAVE INTERACTIONS IN FERROMAGNETISM AND ANTIFERROMAGNETISM [J].

OGUCHI, T .

PHYSICAL REVIEW, 1960, 117 (01) :117-123

[8] Giant dielectric constant response in a copper-titanate [J].

Ramirez, AP ;

Subramanian, MA ;

Gardel, M ;

Blumberg, G ;

Li, D ;

Vogt, T ;

Shapiro, SM .

SOLID STATE COMMUNICATIONS, 2000, 115 (05) :217-220

[9] High dielectric constant in ACu3Ti4O12 and ACu3Ti3FeO12 phases [J].

Subramanian, MA ;

Li, D ;

Duan, N ;

Reisner, BA ;

Sleight, AW .

JOURNAL OF SOLID STATE CHEMISTRY, 2000, 151 (02) :323-325

[10] ANTIFERROMAGNETISM IN LA2CUO4-Y [J].

VAKNIN, D ;

SINHA, SK ;

MONCTON, DE ;

JOHNSTON, DC ;

NEWSAM, JM ;

SAFINYA, CR ;

KING, HE .

PHYSICAL REVIEW LETTERS, 1987, 58 (26) :2802-2805

← 1 2 →