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Evolution of parasitic phases with growth temperature in sputtered Bi F e O 3 thick films and their effect on magnetic properties
Author(s) -
Kang Limin,
Zhang Wei,
Sun Yi,
Ouyang Jun
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201330055
Subject(s) - crystallinity , materials science , coercivity , sputter deposition , magnetization , sputtering , magnetic field , phase (matter) , analytical chemistry (journal) , thin film , nuclear magnetic resonance , condensed matter physics , nanotechnology , chemistry , composite material , physics , organic chemistry , chromatography , quantum mechanics
In this work, BiFeO 3 thick films (∼500 nm) with tunable magnetic properties were prepared on (100) LaAlO 3 substrates at temperatures of 650, 700, and 750 °C by using a radio‐frequency (RF) magnetron sputtering technique, followed by a cooling process in a low pressure, pure oxygen atmosphere. The thick films contain small amount of Bi 2 O 3 and Fe 2 O 3 parasitic phases, in addition to the main crystalline phase of {100}‐oriented rhombohedral BiFeO 3 . It was disclosed that the growth temperature had a paramount effect on the morphology and crystallinity of parasitic phases in the BiFeO 3 thick films, which determined their magnetic properties including coercive field, magnetization, magnetic susceptibility, and magnetic anisotropy.