Magnetic state of Fe atoms in La(Fe1-xVx)2Si2 (0 ≤ x ≤ 0.5) compounds / Gerasimov E.G., Gaviko V.S., Zaikov N.K., Podgornykh S.M., Korolev A.V., Pirogov A.N. // Physics of Metals and Metallography. - 2000. - V. 90, l. 3. - P. 231-238.

ISSN:
0031918X
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Article
Abstract:
Magnetic properties of quasi-ternary La(Fe1-xVx)2Si2 compounds were studied in the composition range (0 ≤ x ≤ 0.5) of existence of solid solutions. The LaFe2Si2 ternary compound is a Pauli paramagnet with a virtually temperature-independent magnetic susceptibility. The V-containing compounds exhibit temperature dependence of the magnetic susceptibility obeying the Curie-Weiss law with a negative paramagnetic Curie temperature (Θp ≈ -9 to -21 K) and effective magnetic moment μeff equal to ≈ 0.51-2.48 μB/f.u. It was assumed that, in contrast to the ternary compound, Fe atoms in the quasi-ternary compounds (x > 0) have a magnetic moment. Measurements of the electrical resistivity and thermal expansion and neutron diffraction analysis of the La(Fe0.5V0.5)2Si2 compound with the maximum effective magnetic moment shows that no long-range magnetic order is found above 4.2 K.
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Affiliations Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Yekaterinburg, 620219, Russian Federation
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Correspondence Address Gerasimov, E.G.; Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Yekaterinburg, 620219, Russian Federation
Language of Original Document English
Abbreviated Source Title Phys. Met. Metallogr.
Source Scopus