Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2003

Идентификатор DOI: 10.1134/1.1633954

Аннотация: We have performed a complex investigation of the structure and the magnetic and electrical properties of a warwickite single crystal with the composition Fe1.91V0.09BO4 . The results of Mossbauer measurements at T = 300 K indicate that there exist "localized" (Fe2+, Fe3+) and "delocalized" (Fe2.5+) states distributed over two crystallographically nonequivalent positions. The results of magnetic measurements show that warwickite is a P-type ferrimagnet below T = 130 K. The material exhibits hopping conductivity involving strongly interacting electrons. The experimental data are analyzed in comparison to the properties of the initial (unsubstituted) Fe2BO4 warwickite. The entire body of data on the electric conductivity and magnetization are interpreted on a qualitative basis. (C) 2003 MAIK "Nauka / Interperiodica".

Журнал: JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS

Выпуск журнала: Vol. 97, Is. 5

Номера страниц: 989-995

ISSN журнала: 10637761

Место издания: MELVILLE

Издатель: AMER INST PHYSICS

• Balaev A.D. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
• Bayukov O.A. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
• Vasil'ev A.D. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
• Velikanov D.A. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
• Kazak N.V. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
• Ovchinnikov S.G. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
• Rudenko V.V. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
• Ivanova N.B. (Krasnoyarsk State Technical University)
• Abd-Elmeguid M. (Physikalisches Institut II,Universitat zu Koln)

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