Crystal and magnetic structure of (1−x)BiFeO{sub 3}–xSrTiO{sub 3} (x=0.2, 0.3, 0.4 and 0.8)

Journal Article · Fri Nov 15 04:00:00 EST 2013 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2013.09.024· OSTI ID:22274152

Weekes, C. J. ^[1]; Avdeev, Maxim ^[2]; Hutchison, W. D. ^[3]

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1. Research School of Chemistry, The Australian National University, Canberra 0200 (Australia)
2. The Bragg Institute, Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW 2234 (Australia)
3. School of Physical, Environmental and Mathematical Sciences, University of New South Wales, Canberra (Australia)

The effect of doping SrTiO{sub 3} into BiFeO{sub 3} on the magnetic and crystal structure has been explored using powder neutron diffraction for (1−x)BiFeO{sub 3}–xSrTiO{sub 3} where x=0.2, 0.3, 0.4, 0.6 and 0.8. While the data are not sensitive to the cycloidal component of the magnetic ordering, the evolution of the collinear antiferromagnetic moment of the G-type antiferromagnetic component with T and x has been explored, as have structural parameters. It is found that for x≤0.4 pure phase samples form in the R3c cell, and for x=0.8 a non-magnetic Pm3{sup ¯}m phase is obtained. The x=0.6 sample gives a mixed phase. Through the R3c phase the magnetic structure does not change appreciably apart from the reduction of magnetic moment magnitude with the increasing T and/or x. - Graphical abstract: A simple phase diagram for (1−x)BiFeO{sub 3}–xSrTiO{sub 3} , where hexagons indicate the rhombohedral R3c phase and boxes the cubic phase. Filled symbols indicate magnetic ordering. The black arrow indicates T{sub N} for BiFeO{sub 3}. Display Omitted - Highlights: • We have established part of the phase diagram for doping SrTiO{sub 3} into BiFeO{sub 3}. • (1−x)BiFeO{sub 3}–xSrTiO{sub 3} is isostructural with BiFeO{sub 3} up to x<0.4, and cubic for x>0.85. • We have examined the evolution of ordered magnetic moment with T and x.

• OSTI ID: 22274152
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. 207; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANTIFERROMAGNETISM
BISMUTH
CRYSTALS
CUBIC LATTICES
FERRITE
FERRITES
MAGNETIC MOMENTS
MAGNETIZATION
NEUTRON DIFFRACTION
PHASE DIAGRAMS
POWDERS
STRONTIUM
STRONTIUM TITANATES
TRIGONAL LATTICES