Crystal structure and electrical properties of [Gd.sub.x][Mn.sub.1 - x]S and [Ti.sub.x][Mn.sub.1 - x]Se solid solutions

Regions of the existence of sulfide [Gd.sub.x][Mn.sub.1 - x]S and selenide [Ti.sub.x][Mn.sub.1 - x]Se solid solutions have been identified. Their electrical and thermoelectric properties have been studied in the temperature range 80-900 K. It has been established that the substitution of [Gd.sup.2+]...

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Bibliographic Details
Published in:Physics of the solid state 2010-04, Vol.52 (4), p.687
Main Authors: Galyas, A.I, Demidenko, O.F, Makovetskii, G.I, Yanushkevich, K.I, Ryabinkina, L.I, Romanova, O.B
Format: Article
Language:English
Subjects:
Crystals
Electric properties
Solid solutions
Structure
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Summary:Regions of the existence of sulfide [Gd.sub.x][Mn.sub.1 - x]S and selenide [Ti.sub.x][Mn.sub.1 - x]Se solid solutions have been identified. Their electrical and thermoelectric properties have been studied in the temperature range 80-900 K. It has been established that the substitution of [Gd.sup.2+] and [Ti.sup.2+] ions for [Mn.sup.2+] cations initiates reversal of the type of charge carrier with respect to the starting compounds MnS and MnSe. The cation substitution in solid solutions brings about a change from the hole conduction (α > 0) characteristic of the manganese monosulfide and monoselenide to the electronic conduction (α < 0).
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783410040037