Spin correlations in the pyrochlore slab compounds Ba2Sn2Ga10-7pZnCr7pO22

被引：15

作者：

Bonnet, P

Payen, C

Mutka, H

Danot, M

Fabritchnyi, P

Stewart, JR

Mellergård, A

Ritter, C

机构：

[1] Univ Nantes, CNRS, UMR 6502, Inst Mat Jean Rouxel, F-44322 Nantes 3, France

[2] Inst Laue Langevin, Grenoble, France

[3] Studsvik Neutron Res Lab, Nykoping, Sweden

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 11期

关键词：

D O I：

10.1088/0953-8984/16/11/038

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The low-temperature properties of a diluted antiferromagnetic pyrochlore slab of S = 3/2 spins are investigated through a study of the frustrated oxides Ba2Sn2Ga10-7pZnCr7pO22 (P > 0.85). Powder neutron diffraction and Sn-119 Mossbauer absorption show no evidence of long-range magnetic order above 1.5 K. As in SrCr9qGa12-9qO19, diffuse magnetic scattering, indicative of short range spin-spin correlations, is observed at low temperature. The dependence of the low-temperature sub-Curie bulk susceptibility to weak site depletion is the inverse of that observed in SrCr9qGa12-9qO19.

引用

收藏

页码：S835 / S842

页数：8

相关论文

共 17 条

[1] SCALING STUDIES OF HIGHLY DISORDERED SPIN-1/2 ANTI-FERROMAGNETIC SYSTEMS [J].

BHATT, RN ;

LEE, PA .

PHYSICAL REVIEW LETTERS, 1982, 48 (05) :344-347

[2] Dynamical mean-field theory of resonating-valence-bond antiferromagnets [J].

Georges, A ;

Siddharthan, R ;

Florens, S .

PHYSICAL REVIEW LETTERS, 2001, 87 (27) :277203-277203

[3]

GINGRAS MJP, 2001, CAN J PHYS, V79, P1283

[4] Geometric magnetic frustration in Ba2Sn2Ga3ZnCr7O22:: A two-dimensional spinel based Kagome lattice [J].

Hagemann, IS ;

Huang, Q ;

Gao, XPA ;

Ramirez, AP ;

Cava, RJ .

PHYSICAL REVIEW LETTERS, 2001, 86 (05) :894-897

[5] Emergent excitations in a geometrically frustrated magnet [J].

Lee, SH ;

Broholm, C ;

Ratcliff, W ;

Gasparovic, G ;

Huang, Q ;

Kim, TH ;

Cheong, SW .

NATURE, 2002, 418 (6900) :856-858

[6] Susceptibility and dilution effects of the kagome bilayer geometrically frustrated network:: A GaNMR study of SrCr9pGa12-9pO19 -: art. no. 144447 [J].

Limot, L ;

Mendels, P ;

Collin, G ;

Mondelli, C ;

Ouladdiaf, B ;

Mutka, H ;

Blanchard, N ;

Mekata, M .

PHYSICAL REVIEW B, 2002, 65 (14) :1-18

[7] MAGNETIC DILUTION IN THE STRONGLY FRUSTRATED KAGOME ANTIFERROMAGNET SRGA12-XCRXO19 [J].

MARTINEZ, B ;

SANDIUMENGE, F ;

ROUCO, A ;

LABARTA, A ;

RODRIGUEZCARVAJAL, J ;

TOVAR, M ;

CAUSA, MT ;

GALI, S ;

OBRADORS, X .

PHYSICAL REVIEW B, 1992, 46 (17) :10786-10792

[8]

Mondelli C, 2001, CAN J PHYS, V79, P1401, DOI 10.1139/cjp-79-11/12-1401

[9] Temperature dependence of the spin dynamics in the strongly frustrated antiferromagnet SrCr9xCa12-9xO19 (SCGO) [J].

Mondelli, C ;

Mutka, H ;

Payen, C ;

Frick, B ;

Andersen, KH .

PHYSICA B, 2000, 284 :1371-1372

[10] Polarized neutron scattering study of the kagome antiferromagnet SrCr8Ga4O19 [J].

Mondelli, C ;

Andersen, K ;

Mutka, H ;

Payen, C ;

Frick, B .

PHYSICA B-CONDENSED MATTER, 1999, 267 :139-141