Thermally or Magnetically Induced Polarization Reversal in the Multiferroic CoCr2O4

被引：176

作者：

Choi, Y. J. ^{[1
,8
]}

Okamoto, J. ^{[2
]}

Huang, D. J. ^{[2
,3
]}

Chao, K. S. ^{[2
,4
]}

Lin, H. J. ^{[2
]}

Chen, C. T. ^{[2
]}

van Veenendaal, M. ^{[5
,7
]}

Kaplan, T. A. ^{[6
]}

Cheong, S-W. ^{[1
,8
]}

机构：

[1] Rutgers Ctr Emergent Mat, Piscataway, NJ 08854 USA

[2] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

[3] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan

[4] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30010, Taiwan

[5] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

[6] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[7] Argonne Natl Lab, Argonne, IL 60439 USA

[8] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 06期

关键词：

FERROELECTRIC POLARIZATION; SCATTERING; COBALT;

D O I：

10.1103/PhysRevLett.102.067601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the unexpected evolution, with thermal and magnetic-field (H) variations, of the interrelation between the polarization P, magnetization M, and spiral wave vector Q in CoCr2O4, which has a ferrimagnetic conical-spiral magnetic order. For example, P suddenly jumps and changes its sign at the magnetic lock-in transition (T-L) with thermal variation, or with isothermal variation of H (without changing its direction) at T-L, which surprisingly occurs without change in spiral handedness (i.e., the sign of Q). The presence of multiple spiral sublattices may be behind this unusual behavior.

引用

页数：4

共 30 条

[1] Spin-lattice coupling in ferroelectric spiral magnets:: Comparison between the cases of (Tb,Dy)MnO3 and CoCr2O4 [J].

Arima, Taka-hisa ;

Yamasaki, Yuichi ;

Goto, Takeshi ;

Iguchi, Satoshi ;

Ohgushi, Kenya ;

Miyasaka, Shigeki ;

Tokura, Yoshinori .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2007, 76 (02)

[2] POLARIZATION DEPENDENCE OF MAGNETIC-X-RAY SCATTERING [J].

BLUME, M ;

GIBBS, D .

PHYSICAL REVIEW B, 1988, 37 (04) :1779-1789

[3] POLARIZATION EFFECTS IN MAGNETIC ELASTIC SCATTERING OF SLOW NEUTRONS [J].

BLUME, M .

PHYSICAL REVIEW, 1963, 130 (05) :1670-&

[4] Multiferroics: a magnetic twist for ferroelectricity [J].

Cheong, Sang-Wook ;

Mostovoy, Maxim .

NATURE MATERIALS, 2007, 6 (01) :13-20

[5] Colossal magnetodielectric effects in DyMn2O5 -: art. no. 107207 [J].

Hur, N ;

Park, S ;

Sharma, PA ;

Guha, S ;

Cheong, SW .

PHYSICAL REVIEW LETTERS, 2004, 93 (10) :107207-1

[6] Electric polarization reversal and memory in a multiferroic material induced by magnetic fields [J].

Hur, N ;

Park, S ;

Sharma, PA ;

Ahn, JS ;

Guha, S ;

Cheong, SW .

NATURE, 2004, 429 (6990) :392-395

[7] Microscopic theory of spin-polarization coupling in multiferroic transition metal oxides [J].

Jia, Chenglong ;

Onoda, Shigeki ;

Nagaosa, Naoto ;

Han, Jung Hoon .

PHYSICAL REVIEW B, 2007, 76 (14)

[8] Spin ordering in three-dimensional crystals with strong competing exchange interactions (vol 87, pg 3711, 2007) [J].

Kaplan, T. ;

Menyuk, N. .

PHILOSOPHICAL MAGAZINE, 2008, 88 (02) :279-279

[9] Spin ordering in three-dimensional crystals with strong competing exchange interactions [J].

Kaplan, T. A. ;

Menyuk, N. .

PHILOSOPHICAL MAGAZINE, 2007, 87 (25) :3711-3785

[10]

KAPLAN TA, ARXIVECONDMAT0608227

← 1 2 3 →