Effect of Ho substitution on structure and magnetic properties of BiFeO3

Structure and magnetic properties of trivalent Ho substituted BiFeO3 (HoxBi1−xFeO3) have been studied for the compositional range x = 0 to 0.2. The structure remains in rhombohedral R3c for x 

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Published in:Journal of applied physics 2014-05, Vol.115 (17)
Main Authors: Suresh, Pittala, Babu, P. D., Srinath, S.
Format: Article
Language:English
Subjects:
Bismuth ferrite
Cycloids
Doping
Ferromagnetism
Hysteresis loops
Lattices (mathematics)
Magnetic properties
Magnetism
Subgroups
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description Structure and magnetic properties of trivalent Ho substituted BiFeO3 (HoxBi1−xFeO3) have been studied for the compositional range x = 0 to 0.2. The structure remains in rhombohedral R3c for x 
doi_str_mv 10.1063/1.4863944
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The structure remains in rhombohedral R3c for x &lt; 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−1 confirms the structural changes. Ho doping at Bi site breaks the spin cycloid of BiFO3 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 (ΘC) and HC attains a maximum close to ΘC. Variation of HC 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 BiFeO3 for multiferroic applications.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4863944</doi></addata></record>
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subjects Bismuth ferrite
Cycloids
Doping
Ferromagnetism
Hysteresis loops
Lattices (mathematics)
Magnetic properties
Magnetism
Subgroups
title Effect of Ho substitution on structure and magnetic properties of BiFeO3
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