Structural and magnetic properties of the oxyborate Co5Ti(O2BO3)2

被引：38

作者：

Freitas, D. C. ^{[1
]}

Guimaraes, R. B. ^{[1
]}

Sanchez, D. R. ^{[1
]}

Fernandes, J. C. ^{[1
]}

Continentino, M. A. ^{[2
]}

Ellena, J. ^{[3
]}

Kitada, A. ^{[4
]}

Kageyama, H. ^{[4
]}

Matsuo, A. ^{[5
]}

Kindo, K. ^{[5
]}

Eslava, G. G. ^{[6
]}

Ghivelder, L. ^{[6
]}

机构：

[1] Univ Fed Fluminense, Inst Fis, Campus Praia Vermelha, BR-24210346 Niteroi, RJ, Brazil

[2] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil

[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[4] Kyoto Univ, Grad Sch Sci, Dept Chem, Kyoto 6068502, Japan

[5] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[6] Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 02期

关键词：

NI5TIB2O10; FE3O2BO3;

D O I：

10.1103/PhysRevB.81.024432

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present an extensive study of the oxyborate material Co5Ti(O2BO3)(2) using x-ray, magnetic, and thermodynamic measurements. This material belongs to a family of oxyborates known as ludwigites which presents low-dimensional subunits in the form of three leg ladders in its structure. Differently from previously investigated ludwigites the present material does not show long-range magnetic order although it goes into a spin-glass state at low temperatures. The different techniques employed in this paper allow for a characterization of the structure, the nature of the low-energy excitations and the magnetic anisotropy of this system. Its unique magnetic behavior is discussed and compared with those of other magnetic ludwigites.

引用

页数：7