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Hydrothermal Synthesis of Ba‐Hexaferrite Nanoparticles
Author(s) -
Drofenik Miha,
Kristl Matjaž,
Žnidaršič Andrej,
Hanžel Darko,
Lisjak Darja
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01740.x
Subject(s) - ostwald ripening , nanocrystalline material , hydrothermal circulation , materials science , nanoparticle , chemical engineering , hydrothermal synthesis , magnetization , mineralogy , crystallography , nanotechnology , chemistry , physics , quantum mechanics , magnetic field , engineering
Barium hexaferrite BaFe 12 O 19 nanoparticles with a single‐domain size were synthesized using a controlled hydrothermal process involving the LaMer–Dinger principle and the Ostwald ripening mechanism. Nanocrystalline particles of BaFe 12 O 19 were obtained when the molar ratio of the precursor composition Ba(OH) 2 ·8H 2 O/γ‐Fe 2 O 3 was 0.3 and the concentration of the suspension was about 1 wt%. The as‐synthesized crystalline BaFe 12 O 19 platelets approximately 50 nm in length and 5 nm in thickness exhibited a saturation magnetization of 40 Am 2 /kg.