Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 324, Issue 6, Pages 923-927Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2011.07.044
Keywords
Transition metal oxyborate; Distinct crystallographic position; Spin glass magnetic ordering
Funding
- Russian Foundation for Basic Research [09-02-00171-a]
- Federal Agency for Science and Innovation (Rosnauka) [MK-5632.2010.2]
- Physical Division of the Russian Academy of Science [2.3.1]
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The needle shape single crystals Co3-x MnxO2BO3 with ludwigite structure have been prepared. According to the X-ray diffraction data the preferable character of distinct crystallographic positions occupation by Mn ions is established. Magnetization field and temperature dependencies are measured. Paramagnetic Curie temperature value Theta = -100 K points out the predominance of antiferromagnetic interactions. Spin-glass magnetic ordering takes the onset at T-N=41 K. The crystallographic and magnetic properties of Co3O2BO3:Mn are compared with the same for the isostructural analogs Co3O2BO3 and CoO2BO3:Fe. (C) 2011 Elsevier B.V. All rights reserved.
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