Modulating microstructure and magnetic properties of BaFe{sub 12}O{sub 19} thin films by using Pt and yttria stabilized zirconia underlayers

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3272811· OSTI ID:21359398

Li, Q F; Su, X D; Li, H; Zhang, L ^[1]; Liu, Z H; Zhong, H J ^[2]

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1. Department of Physics, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006 (China)
2. Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215125 (China)

The c-axis oriented barium ferrite thin films were prepared by radio frequency magnetron sputtering on silicon substrates with a metal underlayer Pt (111) as well as an oxide underlayer yttria stabilized zirconia (YSZ). Microstructural studies (scanning electron microscopy, atomic force microscopy, and magnetic force microscopy) showed that the magnetic grains in BaM film have a strong relationship with the grains in the underlayer. The Pt underlayer is more effective in forming micrometer-sized and multidomain magnetic grains, which have high saturation magnetization but small coercivity and remanence of the BaM film. On the contrary, the YSZ underlayer is favorable to obtain nanometer-sized and monodomain magnetic grains, which lead to a slight decrease in saturation magnetization but dramatically increase coercivity and remanence of the BaM film. Hence, with careful selection of underlayer, it is feasible to obtain suitable magnetic grain size and domain structure of BaM films to satisfy special requirements.

• OSTI ID: 21359398
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 12 Vol. 106; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALKALINE EARTH METAL COMPOUNDS
ATOMIC FORCE MICROSCOPY
BARIUM COMPOUNDS
CHALCOGENIDES
COERCIVE FORCE
DEPOSITION
DOMAIN STRUCTURE
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
ELEMENTS
FERRIMAGNETIC MATERIALS
FERRITES
FILMS
GRAIN SIZE
IRON COMPOUNDS
MAGNETIC FIELDS
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETIZATION
MATERIALS
METALS
MICROSCOPY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLATINUM
PLATINUM METALS
RADIATIONS
RADIOWAVE RADIATION
SCANNING ELECTRON MICROSCOPY
SEMIMETALS
SILICON
SIZE
SPUTTERING
SUBSTRATES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES