Magnetic ordering in Ln0.7Sr0.3Mn0.85Sb0.15O3 (Ln = La, Nd, Sm, Eu)

被引：0
作者：
I. O. Troyanchuk
M. V. Bushinsky
D. V. Karpinsky
V. V. Sikolenko
M. Frontzek
V. V. Efimov
机构：
[1] National Academy of Sciences of Belarus,Scientific
[2] Joint Institute for Nuclear Research,Practical Materials Research Centre
[3] Helmholtz-Zentrum Berlin for Materials and Energy,Paul Scherrer Institut
[4] Laboratory for Neutron Scattering,undefined
来源：
Physics of the Solid State | 2015年 / 57卷
关键词：
Manganite; Curie Point; Covalent Component; Superexchange Interaction; Neutron Diffraction Pattern;
D O I：
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学科分类号：
摘要：
The crystal structure and magnetic properties of stoichiometric compounds Ln0.7Sr0.3Mn0.85Sb0.15O3, in which manganese ions are in a trivalent state, have been investigated. No cooperative orbital ordering has been found in the Ln = La composition, but structural parameters of the Ln = Nd composition indicate Jahn-Teller distortions. It has been shown that, as the ionic radius of lanthanide (Ln) decreases, structural distortions of the MnO6 octahedron increase and the ferromagnetic component weakens due to a decrease in hybridization of manganese and oxygen orbitals. An increase in the covalent component of the chemical bond along with the orbital disorder promotes an increase in the role of positive superexchange interactions Mn3+-O-Mn3+.
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页码：1128 / 1133
页数：5
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