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Title: Magnetic properties of Mn{sub 3}O{sub 4} film with a coexistence of two preferential orientations

A Mn{sub 3}O{sub 4} film with a coexistence of two preferential orientations has been grown on a Pt(111)//Si(100) substrate by plasma-assisted molecular beam epitaxy. The structural characteristics and chemical compositions of the film are investigated by using X-ray diffraction, Raman, and X-ray photoelectron spectra in detail. Together with the magnetic tests, the film is demonstrated to be a polycrystalline hausmannite Mn{sub 3}O{sub 4} with no other impurities. Moreover, the hysteresis loops of the film are found to display a step or a characteristic shrinking at low fields. On the other hand, similar magnetic characteristics have also been discovered on the film with two phases grown on a MgAl{sub 2}O{sub 4}(001) substrate. In our opinion, considering the large magnetocrystalline anisotropy and shape anisotropy of the single crystal Mn{sub 3}O{sub 4} film reported in previous works, the special structures and phases of the two films result in both of them as soft+hard magnetic composites, in agreement with some other reports.
Authors:
; ; ; ; ;  [1]
  1. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275 (China)
Publication Date:
OSTI Identifier:
22308971
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; CHEMICAL COMPOSITION; FILMS; HYSTERESIS; MAGNETIC PROPERTIES; MANGANESE OXIDES; MOLECULAR BEAM EPITAXY; MONOCRYSTALS; PLATINUM; POLYCRYSTALS; SILICON; SUBSTRATES; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY