Effect of Ni and Al substitution on the magnetic properties of Y-type hexaferrite Ba0.5Sr1.5Zn0.5Ni1.5Fe11.92Al0.08O22 powders

The effect is reported of substituting the non-magnetic Zn2+ cations with magnetic Ni2+ cations, and of the magnetic Fe3+ cations with non-magnetic Al3+ cations in Ba0.5Sr1.5Zn0.5Ni1.5Fe11.92Al0.08O22 on the resulting magnetic properties. The Y-type hexaferrite powders were synthesized by citric aci...

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Main Authors: Georgieva, B, Kolev, S, Krezhov, K, Ghelev, Ch, Kovacheva, D, L-M, Tran, Babij, M, Zaleski, A, Vertruyen, B, Closset, R, Koutzarova, T
Format: Conference Proceeding
Language:English
Subjects:
Aluminum
Cations
Citric acid
Magnetic fields
Magnetic properties
Magnetic saturation
Magnetism
Magnetization
Nickel
Physics
Sol-gel processes
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Summary:The effect is reported of substituting the non-magnetic Zn2+ cations with magnetic Ni2+ cations, and of the magnetic Fe3+ cations with non-magnetic Al3+ cations in Ba0.5Sr1.5Zn0.5Ni1.5Fe11.92Al0.08O22 on the resulting magnetic properties. The Y-type hexaferrite powders were synthesized by citric acid sol-gel auto-combustion, followed by appropriate thermal annealing. The saturation magnetization values (Ms ) in a magnetic field of 50 kOe were 36 emu/g and 30 emu/g at 4.2 K and 300 K, respectively. The zero-field-cooled (ZFC) and field-cooled (FC) magnetization vs. temperature (4.2 – 300 K) were measured in dc magnetic fields of 50 Oe, 100 Oe and 500 Oe. The changes resulting from the dissimilar cationic substitutions were identified and discussed.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1859/1/012067