Crystal-structure and magnetic phase transformations in solid solutions of BiFeO{sub 3}-AFe{sub 0.5}Nb{sub 0.5}O{sub 3} (A = Ca, Sr, Ba, Pb)

Journal Article · Fri Aug 15 00:00:00 EDT 2008 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776108080086· OSTI ID:21241957

Troyanchuk, I O; Chobot, A N; Mantytskaya, O S ^[1]; Pushkarev, N V ^[2]; Szymczak, R ^[3]

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1. National Academy of Sciences of Belarus, State Amalgamation Research and Production Material Science Center (Belarus)
2. Sakharov International State Ecological University (Belarus)
3. Polish Academy of Sciences, Institute of Physics (Poland)

Solid solutions of Bi{sub 1-x}A{sub x}(Fe{sub 1-x/2}Nb{sub x/2})O{sub 3}, where A = Ca, Ba, and Pb, are obtained and their crystal structure and magnetic properties are investigated. It is shown that for A = Ca and x {approx} 0.15, the symmetry of the unit cell changes from rhombohedral (space group R3c) to orthorhombic (Pbnm). The transformation leads to the emergence of spontaneous magnetization due to the Dzyaloshinskii-Moriya interaction. Solid solutions with A = Pb remain rhombohedral up to a concentration of x = 0.3. Spontaneous magnetization sharply increases in the compound with x {approx} 1 at low temperatures and is due to the formation of the spin-glass component.

• OSTI ID: 21241957
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 107, Issue 2; Other Information: DOI: 10.1134/S1063776108080086; Copyright (c) 2008 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
IRON OXIDES
LEAD COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIZATION
NIOBIUM OXIDES
ORTHORHOMBIC LATTICES
PHASE TRANSFORMATIONS
SOLID SOLUTIONS
SPACE GROUPS
SPIN GLASS STATE
STRONTIUM COMPOUNDS
SYMMETRY
TRIGONAL LATTICES