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Synthesis and magnetic properties of La3+-Co2+ substituted strontium ferrite particles using modified spray pyrolysis- calcination method
- Authors
- Hwang, Tae-Yeon; Lee, Jimin; Lim, Hyo-Ryoung; Jeong, Seung-Jae; An, Guk-Hwan; Kim, Jongryoul; Choa, Yong-Ho
- Issue Date
- Mar-2017
- Publisher
- Pergamon Press Ltd.
- Keywords
- Powders: solid state reaction; Magnetic properties; Transition metal oxide; Hard magnets
- Citation
- Ceramics International, v.43, no.4, pp 3879 - 3884
- Pages
- 6
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Ceramics International
- Volume
- 43
- Number
- 4
- Start Page
- 3879
- End Page
- 3884
- ISSN
- 0272-8842
1873-3956
- Abstract
- The purpose of the research was to improve the intrinsic magnetic properties of strontium ferrite by substituting lanthanum and cobalt for strontium and iron. The salt-assisted ultrasonic spray pyrolysis (SA-USP) following calcination process were used to from La-Co substituted strontium ferrite particles (LaxSr1-xFe12-yCoyO19), and their compositional dependent magnetic properties systemically investigated. All the samples were calcined at 1050 degrees C for 1 h in an air atmosphere to yield single-phased hexagonal particles several hundred nanometers to microns in size. A saturation magnetization of 70.76 emu/g and a coercivity 7265 Oe were obtained at a composition of La0.25Sr0.75Fe11.75CO0.25O19. The amount of Co was reduced to obtain an optimized saturation magnetization of 71.40 emu/g and a coercivity of 7572 Oe at a composition of La0.25Sr0.75Fe11.75CO0.25O19.
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Related Researcher
- Kim, Jong ryoul
- ERICA 첨단융합대학 (ERICA 신소재·반도체공학전공)