Effects of Calcination Conditions on Magnetic Properties in Strontium Ferrite Synthesized by the Molten Salt Method

Title
Effects of Calcination Conditions on Magnetic Properties in Strontium Ferrite Synthesized by the Molten Salt Method
Author
김종렬
Keywords
Magnetic alignment; molten salt method; strontium ferrite; CERAMICS
Issue Date
2016-07
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON MAGNETICS, v. 52, No. 7, Article no. 2101604
Abstract
The coercivity and the remanence of sintered M-type ferrites are highly dependent on the microstructure of the ferrite particles, particularly the size, morphology, and crystal orientation of the particles. To control the microstructures of ferrite particles, it is strongly recommended to control the nucleation and grain growth of them. In this paper, molten NaCl was used to control the crystal orientation and shape of Sr ferrite (SrFe12O19) particles. By changing the calcination conditions, Sr ferrite particles were obtained which had a hexagonal plate shape, and whose c-axis was aligned to the normal direction of the plate. Without any sophisticated magnetic alignment, Sr ferrite particles calcined at 1050 degrees C showed a saturation magnetization of 73.5 emu/g and a coercivity of 3267 G. This method was shown to be effective for developing high-performance hard ferrites.
URI
https://ieeexplore.ieee.org/abstract/document/7410087/http://hdl.handle.net/20.500.11754/65827
ISSN
0018-9464; 1941-0069
DOI
10.1109/TMAG.2016.2531119
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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