New magnetic phase transitions in BiFeO3

被引:152
作者
Singh, Manoj K. [1 ,2 ]
Katiyar, Ram S. [1 ,2 ]
Scott, J. F. [3 ]
机构
[1] Univ Puerto Rico, Dept Phys, Rio Piedras, PR 00931 USA
[2] Univ Puerto Rico, Inst Funct Nano Mat, Rio Piedras, PR 00931 USA
[3] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England
关键词
D O I
10.1088/0953-8984/20/25/252203
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We observed Raman scattering from magnons in the frequency range from 10 to 65 cm(-1) in BiFeO3 single crystals at cryogenic temperatures; the temperature dependence of the magnon frequency at 18.2 cm(-1) approximates an S = 5/2 Brillouin function up to the temperature (similar to 280 K) at which the magnon becomes overdamped. The diverging cross section and the frequency shift at similar to 140 and similar to 200 K implies a spin-reorientation transition as in orthoferrites.
引用
收藏
页数:4
相关论文
共 20 条
[1]   Multiferroic and magnetoelectric materials [J].
Eerenstein, W. ;
Mathur, N. D. ;
Scott, J. F. .
NATURE, 2006, 442 (7104) :759-765
[2]  
FUKUMARA H, 2007, J PHYS CONDENS MATT, V19, P36
[3]  
HILL NA, J PHYS CHEM, V104, P6694
[4]  
JANSSEN A, 1992, INT TABLES CRYSTALLO, VC, P797
[5]   LATTICE-DYNAMICS OF INCOMMENSURATE CRYSTAL PHASES [J].
JANSSEN, T .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1979, 12 (24) :5381-5392
[6]   Dynamical magnetoelectric coupling in helical magnets [J].
Katsura, Hosho ;
Balatsky, Alexander V. ;
Nagaosa, Naoto .
PHYSICAL REVIEW LETTERS, 2007, 98 (02)
[7]   INFINITE-RANGED MODELS OF SPIN-GLASSES [J].
KIRKPATRICK, S ;
SHERRINGTON, D .
PHYSICAL REVIEW B, 1978, 17 (11) :4384-4403
[8]   INELASTIC-LIGHT-SCATTERING STUDY OF MAGNON SOFTENING IN ERFEO3 [J].
KOSHIZUKA, N ;
USHIODA, S .
PHYSICAL REVIEW B, 1980, 22 (11) :5394-5399
[9]   STRUCTURE OF A FERROELECTRIC AND FERROELASTIC MONODOMAIN CRYSTAL OF THE PEROVSKITE BIFEO3 [J].
KUBEL, F ;
SCHMID, H .
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1990, 46 :698-702
[10]   Very large spontaneous electric polarization in BiFeO3 single crystals at room temperature and its evolution under cycling fields [J].
Lebeugle, D. ;
Colson, D. ;
Forget, A. ;
Viret, M. .
APPLIED PHYSICS LETTERS, 2007, 91 (02)