Noncollinear magnetic phases of a triangular-lattice antiferromagnet and of doped CuFeO2

被引：31

作者：

Fishman, Randy S. ^{[1
]}

Okamoto, Satoshi ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 02期

关键词：

MULTIFERROICS;

D O I：

10.1103/PhysRevB.81.020402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We obtain the noncollinear ground states of a triangular-lattice antiferromagnet with exchange interactions up to third nearest neighbors as a function of the single-ion anisotropy D. At a critical value of D, the collinear up arrow up arrow down arrow down arrow phase transforms into a complex noncollinear phase with odd-order harmonics of the fundamental ordering wavevector Q. The observed elastic peaks at 2 pi x - Q in both Al- and Ga-doped CuFeO2 are explained by a "scalene" distortion of the triangular-lattice produced by the repulsion of neighboring oxygen atoms.

引用

页数：4

共 28 条

[21] Spin-driven crystal lattice distortion in frustrated magnet CuFeO2:: Synchrotron X-ray diffraction study [J].

Terada, N ;

Mitsuda, S ;

Ohsumi, H ;

Tajima, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2006, 75 (02)

[22] Impact of a small number of nonmagnetic impurities on H-T magnetic phase diagram of CuFeO2 -: art. no. 174412 [J].

Terada, N ;

Mitsuda, S ;

Prokes, K ;

Suzuki, O ;

Kitazawa, H ;

Katori, HA .

PHYSICAL REVIEW B, 2004, 70 (17) :1-7

[23] Anomalous magnetic excitation on triangular lattice antiferromagnet CuFeO2 [J].

Terada, N. ;

Mitsuda, S. ;

Oohara, Y. ;

Yoshizawa, H. ;

Takei, H. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 :E997-E998

[24] Ga-substitution-induced single ferroelectric phase in multiferroic CuFeO2 [J].

Terada, N. ;

Nakajima, T. ;

Mitsuda, S. ;

Kitazawa, H. ;

Kaneko, K. ;

Metoki, N. .

PHYSICAL REVIEW B, 2008, 78 (01)

[25] Restoring higher symmetric crystal structure with magnetic field in triangular lattice antiferromagnet CuFeO2 [J].

Terada, Noriki ;

Tanaka, Yoshikazu ;

Tabata, Yoshikazu ;

Katsumata, Koichi ;

Kikkawa, Akiko ;

Mitsuda, Setsuo .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2006, 75 (11)

[26] Inelastic neutron scattering study of frustrated Heisenberg triangular magnet CuFeO2 [J].

Terada, Noriki ;

Mitsuda, Setsuo ;

Fujii, Toru ;

Petitgrand, Daniel .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2007, 19 (14)

[27] Spontaneous spin-lattice coupling in the geometrically frustrated triangular lattice antiferromagnet CuFeO2 [J].

Ye, F. ;

Ren, Y. ;

Huang, Q. ;

Fernandez-Baca, J. A. ;

Dai, Pengcheng ;

Lynn, J. W. ;

Kimura, T. .

PHYSICAL REVIEW B, 2006, 73 (22)

[28] Magnetic interactions in the geometrically frustrated triangular lattice antiferromagnet CuFeO2 [J].

Ye, F. ;

Fernandez-Baca, J. A. ;

Fishman, R. S. ;

Ren, Y. ;

Kang, H. J. ;

Qiu, Y. ;

Kimura, T. .

PHYSICAL REVIEW LETTERS, 2007, 99 (15)

← 1 2 3 →