Exotic Magnetism of Novel S=1 Kagome Lattice Antiferromagnet KV3Ge2O9

被引：23

作者：

Hara, Shigeo ^{[1
]}

Sato, Hirohiko ^{[1
]}

Narumi, Yasuo ^{[2
]}

机构：

[1] Chuo Univ, Dept Phys, Bunkyo Ku, Tokyo 1128551, Japan

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2012年 / 81卷 / 07期

关键词：

frustration; kagome lattice; vanadium oxide; low-dimensional magnetism; SPIN; NA; STATE;

D O I：

10.1143/JPSJ.81.073707

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Single crystals of the novel vanadium oxide compound KV3Ge2O9 have been synthesized. This compound has a hexagonal unit cell with the space group P6(3)/mmc. Its lattice constants are a = 5.8624(4) angstrom and c = 13.7094(7) angstrom. KV3Ge2O9 contains layers of edge-shared VO6 octahedra, where V3+ ions with an S = 1 spin form kagome lattice layers separated by double layers of GeO4 tetrahedra. The magnetic susceptibility shows a broad maximum at approximately 70 K, suggesting that magnetic transition is suppressed in spite of the presence of strong antiferromagnetic interactions. Below approximately 20 K, the susceptibility under a magnetic field perpendicular to the kagome plane steeply drops toward zero, while the in-plane susceptibility diverges with reduction in temperature.

引用

页数：4

共 20 条

[1] VARIABLE MAGNETIC-INTERACTIONS IN AN ORGANIC RADICAL SYSTEM OF (M-N-METHYLPYRIDINIUM ALPHA-NITRONYL NITROXIDE).X- - A POSSIBLE KAGOME ANTIFERROMAGNET [J].

AWAGA, K ;

OKUNO, T ;

YAMAGUCHI, A ;

HASEGAWA, M ;

INABE, T ;

MARUYAMA, Y ;

WADA, N .

PHYSICAL REVIEW B, 1994, 49 (06) :3975-3981

[2] A Ni2+ (S=1) Kagome compound templated by 1,8-diazacubane [J].

Behera, J. N. ;

Rao, C. N. R. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (29) :9334-9335

[3] SPIN-1/2 HEISENBERG-ANTIFERROMAGNET ON THE KAGOME LATTICE - HIGH-TEMPERATURE EXPANSION AND EXACT-DIAGONALIZATION STUDIES [J].

ELSTNER, N ;

YOUNG, AP .

PHYSICAL REVIEW B, 1994, 50 (10) :6871-6876

[4] Frustrated magnetism in the S=1 kagome lattice BaNi3(OH)2(VO4)2 [J].

Freedman, Danna E. ;

Chisnell, Robin ;

McQueen, Tyrel M. ;

Lee, Young S. ;

Payen, Christophe ;

Nocera, Daniel G. .

CHEMICAL COMMUNICATIONS, 2012, 48 (01) :64-66

[5]

HARA S, COMMUNICATION

[6] Ground state and elementary excitations of the S=1 kagome Hisenberg antiferromagnet [J].

Hida, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000, 69 (12) :4003-4007

[7] Structural and magnetic phase transitions of AV6O11 (A = Na, Sr, and Pb) [J].

Kato, H ;

Kato, M ;

Yoshimura, K ;

Kosuge, K .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (41) :9311-9333

[8] 23NA-NMR study in NAV6O11 [J].

Kato, H ;

Kato, M ;

Yoshimura, K ;

Kosuge, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2001, 70 (05) :1404-1410

[9] Magnetic properties of V-jarosite AV3(SO4)2(OH)6 (A = Na, K) with kagome lattice [J].

Kato, M ;

Hori, T ;

Oba, N ;

Yoshimura, K ;

Goto, T .

PHYSICA B-CONDENSED MATTER, 2003, 329 :1042-1043

[10] Spin dynamics in classical and quantum Kagome lattice magnets studied by NMR [J].

Maegawa, Satoru ;

Kaji, Ryousuke ;

Kanou, Seishi ;

Oyamada, Akira ;

Nishiyama, Masahide .

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

← 1 2 →