Effect of Ho substitution on structure and magnetic properties of BiFeO{sub 3}

Journal Article · Wed May 07 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4863944· OSTI ID:22273843

Suresh, Pittala; Babu, P. D. ^[1]

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1. UGC-DAE Consortium for Scientific Research, R-5 Shed, B.A.R.C., Mumbai 400 085 (India)

Structure and magnetic properties of trivalent Ho substituted BiFeO{sub 3} (Ho{sub x}Bi{sub 1−x}FeO{sub 3}) have been studied for the compositional range x = 0 to 0.2. The structure remains in rhombohedral R3c for x < 0.15, and further increase in x results a structural transition to orthorhombic Pnma. The decrease in Raman modes and the appearance of new mode at 475 cm{sup −1} confirms the structural changes. Ho doping at Bi site breaks the spin cycloid of BiFO{sub 3} and leads to the observation of ferromagnetic order at low temperatures. With increase in temperature, the M-H curves exhibit a pinching leading to double hysteresis loops. A minimum is observed in M-T curves for low fields at compensation temperature (Θ{sub C}) and H{sub C} attains a maximum close to Θ{sub C}. Variation of H{sub C} with temperature is discussed in terms of a model consisting of two sublattices. The improved magnetic properties achieved by Ho doping enhance the potential of BiFeO{sub 3} for multiferroic applications.

• OSTI ID: 22273843
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 17 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH COMPOUNDS
CONCENTRATION RATIO
FERRITES
HOLMIUM COMPOUNDS
HYSTERESIS
MAGNETIC PROPERTIES
ORTHORHOMBIC LATTICES
SPIN
TEMPERATURE DEPENDENCE
TRIGONAL LATTICES