Al substitution; Cationic substitution; DC magnetic field; Field cooled; Hexaferrites; Sol-gel auto-combustion; Thermal-annealing; Zero-field-cooled; Physics and Astronomy (all); General Physics and Astronomy
Abstract :
[en] 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.
Disciplines :
Chemistry Physics
Author, co-author :
Georgieva, B.; Institute of Electronics, Bulgarian Academy of Sciences, Sofia, Bulgaria
Kolev, S.; Institute of Electronics, Bulgarian Academy of Sciences, Sofia, Bulgaria ; Neofit Rilski South-Western University, Blagoevgrad, Bulgaria
Krezhov, K.; Institute of Electronics, Bulgarian Academy of Sciences, Sofia, Bulgaria
Ghelev, Ch; Institute of Electronics, Bulgarian Academy of Sciences, Sofia, Bulgaria
Kovacheva, D.; Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
Tran, L.-M.; Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland
Babij, M.; Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland
Zaleski, A.; Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland
Vertruyen, Bénédicte ; Université de Liège - ULiège > Département de chimie (sciences)
Closset, Raphaël ; Université de Liège - ULiège > Département de chimie (sciences)
Koutzarova, T.; Institute of Electronics, Bulgarian Academy of Sciences, Sofia, Bulgaria
Language :
English
Title :
Effect of Ni and Al substitution on the magnetic properties of Y-type hexaferrite Ba0.5Sr1.5Zn0.5Ni1.5Fe11.92Al0.08O22powders
Publication date :
09 April 2021
Event name :
XXI International Conference and School on Quantum Electronics , Online Event
B. Georgieva was supported by the Bulgarian Ministry of Education and Science under the National Research Program “Young scientists and postdoctoral students” approved by DCM # 577/17.08.2018. This work was supported by the Bulgarian National Science Fund under contract KP-06-India-2, by a joint research project between the Bulgarian Academy of Sciences and WBI, Belgium, and by a joint research project between the Bulgarian Academy of Sciences and the Institute of Low Temperature and Structure Research, Polish Academy of Sciences.
