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

被引：33

作者：

Terada, N

Mitsuda, S

Prokes, K

Suzuki, O

Kitazawa, H

Katori, HA

机构：

[1] Sci Univ Tokyo, Fac Sci, Dept Phys, Shinjuku Ku, Tokyo 162, Japan

[2] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

[3] Natl Inst Mat Sci, Nanomat Lab, Tsukuba, Ibaraki 3050047, Japan

[4] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 17期

基金：

日本学术振兴会;

关键词：

D O I：

10.1103/PhysRevB.70.174412

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have obtained the magnetic field (H) versus temperature (T) magnetic phase diagram for the triangular lattice antiferromagnet CuFe0.98Al0.02O2 using neutron diffraction, magnetization and specific heat measurements on single-crystal samples. On the substitution of a small amount of nonmagnetic Al3+ impurity for Fe3+, the H-T phase diagram was completely modified from that of CuFeO2, suggesting that the quasi-Ising spin character observed in CuFeO2 disappears, and the Heisenberg spin character of Fe3+ is retrieved as a result of the substitution.

引用

收藏

页码：1 / 7

页数：7

相关论文

共 17 条

[1] IMPURITY EFFECT ON THE STABILITY OF THE GROUND-STATE SPIN CONFIGURATION IN TRIANGULAR LATTICE ANTIFERROMAGNET CUFEO2 [J].

AJIRO, Y ;

HANASAKI, K ;

ASANO, T ;

TAKAGI, T ;

MEKATA, M ;

ARUGAKATORI, H ;

GOTO, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (10) :3643-3646

[2] HIGH-FIELD MAGNETIZATION PROCESS IN THE TRIANGULAR LATTICE ANTIFERROMAGNET CUFEO2 UP TO 100-T [J].

AJIRO, Y ;

ASANO, T ;

TAKAGI, T ;

MEKATA, M ;

KATORI, HA ;

GOTO, T .

PHYSICA B, 1994, 201 :71-74

[3] Triangular antiferromagnets [J].

Collins, MF ;

Petrenko, OA .

CANADIAN JOURNAL OF PHYSICS, 1997, 75 (09) :605-655

[4] Submillimeter wave ESR study on triangular lattice antiferromagnet CuFeO2 [J].

Fukuda, T ;

Nojiri, H ;

Motokawa, M ;

Asano, T ;

Mekata, M ;

Ajiro, Y .

PHYSICA B, 1998, 246 :569-571

[5] Effects of oxygen nonstoichiometry on the stability of antiferromagnetic phases of CuFeO2+δ single crystals [J].

Hasegawa, M ;

Batrashevich, MI ;

Zhao, TR ;

Takei, H ;

Goto, T .

PHYSICAL REVIEW B, 2001, 63 (18)

[6] SUCCESSIVE MAGNETIC-ORDERING IN CUFEO2 - A NEW-TYPE OF PARTIALLY DISORDERED PHASE IN A TRIANGULAR LATTICE ANTIFERROMAGNET [J].

MEKATA, M ;

YAGUCHI, N ;

TAKAGI, T ;

SUGINO, T ;

MITSUDA, S ;

YOSHIZAWA, H ;

HOSOITO, N ;

SHINJO, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1993, 62 (12) :4474-4487

[7] Field-induced magnetic phase transitions in a triangular lattice antiferromagnet CuFeO2 up to 14.5T [J].

Mitsuda, S ;

Mase, M ;

Prokes, K ;

Kitazawa, H ;

Katori, HA .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000, 69 (11) :3513-3516

[8] MAGNETIC-ORDERING OF CUFE1-XALXO2 [J].

MITSUDA, S ;

MATSUMOTO, Y ;

WADA, T ;

KURIHARA, K ;

URATA, Y ;

YOSHIZAWA, H ;

MEKATA, M .

PHYSICA B, 1995, 213 :194-196

[9] Neutron diffraction study of triangular lattice antiferromagnet CuFeO2 under high magnetic field [J].

Mitsuda, S ;

Uno, T ;

Mase, M ;

Nojiri, H ;

Takahashi, K ;

Motokawa, M ;

Arai, M .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1999, 60 (8-9) :1249-1251

[10] Partially disordered phase in frustrated triangular lattice antiferromagnet CuFeO2 [J].

Mitsuda, S ;

Kasahara, N ;

Uno, T ;

Mase, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1998, 67 (12) :4026-4029