Dimensional crossover in magnetic warwickites

被引：30

作者：

Guimaraes, RB

Fernandes, JC

Continentino, MA

Borges, HA

Moura, CS

daCunha, JBM

dosSantos, CA

机构：

[1] PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22452970 RIO JANEIRO,BRAZIL

[2] UNIV FED RIO GRANDE SUL,INST FIS,BR-91501970 PORTO ALEGRE,RS,BRAZIL

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.56.292

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present an investigation of the magnetic properties of a series of warwickites with different transition metals. These materials are characterized by one-dimensional structures called ribbons where the transition metals are randomly located. The present results allow for a systematic investigation of the hierarchy of magnetic interactions in these systems. While the intraribbon interactions are mainly direct d-d interactions between the transition-metal ions, the interribbon interaction is due to superexchange between metals in different octahedra mediated by the oxygen in the common corner.

引用

页码：292 / 299

页数：8

共 22 条

[1] BROKEN SPIN ROTATION SYMMETRY WITHOUT MAGNETIC BRAGG PEAKS IN KAGOME ANTIFERROMAGNETS [J].

AEPPLI, G ;

BROHOLM, C ;

RAMIREZ, A ;

ESPINOSA, GP ;

COOPER, AS .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1990, 90-1 :255-259

[2] Random spin-1 quantum chains [J].

Boechat, B ;

Saguia, A ;

Continentino, MA .

SOLID STATE COMMUNICATIONS, 1996, 98 (05) :411-416

[3] Low-energy excitations in the random magnetic chain system MgTiBO4 [J].

Brunner, M ;

Tholence, JL ;

Puech, L ;

Haan, S ;

Capponi, JJ ;

Calemczuk, R ;

Fernandes, JC ;

Continentino, MA .

PHYSICA B, 1997, 233 (01) :37-42

[4] NEW ISOMORPHIC TRANSITION-METAL BORATE COMPOUNDS OF WARWICKITE [J].

CAPPONI, JJ ;

CHENAVAS, J ;

JOUBERT, JC .

JOURNAL OF SOLID STATE CHEMISTRY, 1973, 7 (01) :49-54

[5]

CLARK WG, 1981, SPRINGER SERIES SOLI, P289

[6] Strongly disordered Heisenberg spin-1 chains: Vanadium warwickites [J].

Continentino, MA ;

Fernandes, JC ;

Guimaraes, RB ;

Boechat, B ;

Borges, HA ;

Valarelli, JV ;

Haanappel, E ;

Lacerda, A ;

Silva, PRJ .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1996, 73 (04) :601-609

[7] TITANIUM-III WARWICKITES - A FAMILY OF ONE-DIMENSIONAL DISORDERED MAGNETIC SYSTEMS [J].

FERNANDES, JC ;

GUIMARAES, RB ;

CONTINENTINO, MA ;

BORGES, HA ;

VALARELLI, JV ;

LACERDA, A .

PHYSICAL REVIEW B, 1994, 50 (22) :16754-16757

[8] RANDOM ANTIFERROMAGNETIC QUANTUM SPIN CHAINS [J].

FISHER, DS .

PHYSICAL REVIEW B, 1994, 50 (06) :3799-3821

[9] SINGULAR THERMODYNAMIC PROPERTIES IN RANDOM MAGNETIC CHAINS [J].

HIRSCH, JE ;

JOSE, JV .

PHYSICAL REVIEW B, 1980, 22 (11) :5339-5354

[10] Impurity driven phase transition in the antiferromagnetic spin-1 chain [J].

Hyman, RA ;

Yang, K .

PHYSICAL REVIEW LETTERS, 1997, 78 (09) :1783-1786

← 1 2 3 →