Correlation of the magnetic and transport properties with polymorphic transitions in bismuth pyrostannate [Bi.sub.2][.sub.2][O.sub.7]

The correlation of the electrical, magnetic, and structural properties of [Bi.sub.2][([Sn.sub.1-x][Cr.sub.x]).sub.2][O.sub.7] solid solutions has been investigated for two compositions with x = 0.05 and 0.1. The temperatures of structural phase transitions and anomalies of the electrical resistance...

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Bibliographic Details
Published in:Physics of the solid state 2015-08, p.1627
Main Authors: Aplesnin, S.S, Udod, L.V, Sitnikov, M.N, Eremin, E.V, Molokeev, M.S, Tarasova, L.S, Yanushkevich, K.I, Galyas, A.I
Format: Article
Language:English
Subjects:
Calorimetry
Chromium
Solid solutions
Online Access:Get full text
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Summary:The correlation of the electrical, magnetic, and structural properties of [Bi.sub.2][([Sn.sub.1-x][Cr.sub.x]).sub.2][O.sub.7] solid solutions has been investigated for two compositions with x = 0.05 and 0.1. The temperatures of structural phase transitions and anomalies of the electrical resistance in the vicinity of these transitions at temperatures in the range 300 K < T < 1000 K have been determined using differential scanning calorimetry. It has been found that the thermoelectric power changes sign upon the polymorphic transition. The paramagnetic Curie temperature and the chromium-ion spin have been found from the temperature dependence of the magnetic susceptibility in the range 4 K < T < 1000 K and from the field dependence of the magnetic moment in magnetic fields of up to 6 T.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783415080028