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Title: Mössbauer and magnetic properties of coherently mixed magnetite-cobalt ferrite grown by infrared pulsed-laser deposition

Journal Article · · Croatica Chemica Acta
DOI:https://doi.org/10.5562/cca2752· OSTI ID:1378671
 [1];  [2];  [1];  [1];  [1];  [1];  [3];  [4];  [5];  [5];  [1]
  1. Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (Spain). Instituto de Quimica Fisica Rocasolano
  2. Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (Spain)
  3. Univ. Complutense Madrid (Spain)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. ALBA Synchrotron Light Facility, Barcelona (Spain)
+ Show Author Affiliations

We have studied the magnetic properties and the composition of cobalt ferrite single crystal films on SrTiO3: Nb grown by infrared pulsed-laser deposition. Mössbauer spectra have been recorded from both the target used to grow the films and the films themselves. The Mössbauer spectra of the target taken at low temperatures show a strong dependence of the recoil free fraction of the octahedral sites with temperature. The films composition, with a coexistence of Co-enriched cobalt ferrite and magnetite, has been estimated assuming a similar ratio of the recoil free fractions of the films. X-ray absorption and x-ray magnetic circular dichroism measurements confirm the valence composition of the film and show ferromagnetic Fe-Co coupling in the films with a coercive field around 0.5 T at room temperature. The combination of these characterization techniques allows establishin g the coherent structural and magnetic properties of this biphase system.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1378671
Journal Information:
Croatica Chemica Acta, Vol. 88, Issue 4; ISSN 0011-1643
Publisher:
The Croatian Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

References (1)

Experimental Confirmation of the X-Ray Magnetic Circular Dichroism Sum Rules for Iron and Cobalt journal July 1995

Cited By (1)

Spin-lattice coupling mediated giant magnetodielectricity across the spin reorientation in C a 2 FeCo O 5 journal January 2019

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
cobalt ferrite
oxide spinels
pulsed laser deposition
Mössbauer spectroscopy