Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1021/cg501075c

Аннотация: Ti-substituted barium hexaferrite BaFe12O19 single crystals Ba-Fe12-xTixO19 with x up to 1.3 and sizes 2-8 mm were grown by spontaneous crystallization from molten sodium carbonate flux. The distribution of Ti on different crystallographic sites was determined from single crystal X-ray diffraction data. For low Ti contents up to x Показать полностью= 0.8 the unit cell expands; on further increase of the Ti amount the unit cell starts to shrink. This behavior for low Ti contents is most likely due to a reduction of Fe3+ to Fe2+ for charge balance. At higher Ti concentrations, supposedly vacancies in the transition metal substructure are formed. An increasing Ti concentration results in a monotonous reduction of the Curie temperature from 452 to 251°C and the saturation magnetization at room temperature from 64.8 to 24.8 emu/g for powder samples and from 70.0 to 60.1 emu/g for single crystals (for x up to 0.78). (Figure Presented). © 2014 American Chemical Society.

Журнал: Crystal Growth and Design

Выпуск журнала: Vol. 14, Is. 11

Номера страниц: 5834-5839

• Vinnik D.A. (South Ural State University, 76 Lenin Ave, Chelyabinsk, Russian Federation)
• Zherebtsov D.A. (South Ural State University, 76 Lenin Ave, Chelyabinsk, Russian Federation)
• Mashkovtseva L.S. (South Ural State University, 76 Lenin Ave, Chelyabinsk, Russian Federation)
• Nemrava S. (Institute of Inorganic Chemistry, University of Stuttgart, Pfaffenwaldring 55, Stuttgart, Germany)
• Perov N.S. (Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow, Russian Federation, Baltic Federal University, Nevskogo street 14, Kaliningrad, Russian Federation)
• Semisalova A.S. (Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow, Russian Federation)
• Krivtsov I.V. (South Ural State University, 76 Lenin Ave, Chelyabinsk, Russian Federation)
• Isaenko L.I. (Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Ac. Koptyuga ave. 3, Novosibirsk, Russian Federation, Novosibirsk State University, Pirogova street 2, Novosibirsk, Russian Federation)
• Mikhailov G.G. (South Ural State University, 76 Lenin Ave, Chelyabinsk, Russian Federation)
• Niewa R. (Institute of Inorganic Chemistry, University of Stuttgart, Pfaffenwaldring 55, Stuttgart, Germany)

• Scopus