Magnetic and electrical transport properties of Ru doped cobalt ferrite thin films with perpendicular magnetic anisotropy

Peda, M and Kumar, PSA (2021) Magnetic and electrical transport properties of Ru doped cobalt ferrite thin films with perpendicular magnetic anisotropy. In: AIP Advances, 11 (1).

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Abstract

Epitaxial ferrimagnetic thin films of (Co, Ru) Fe2O4 were grown on MgO (001) substrate using pulsed laser deposition technique. Ruthenium substitution in cobalt ferrite has increased the conductivity by orders of magnitude, but it has a minimal effect on magnetic properties. The film has a high coercivity and perpendicular magnetic anisotropy (PMA), where the magnetic easy axis points perpendicular to the film surface. We report the magnetic and electrical transport properties here. The temperature variation of resistivity showed different conduction mechanisms at high and low-temperature regimes. Room temperature Hall measurement reveals "n"type carrier with a carrier concentration of 4�1020/cm3. The film showed negative MR and a linear decrement with the magnetic field without any saturation. © 2021 Author(s).

Item Type:	Journal Article
Publication:	AIP Advances
Publisher:	American Institute of Physics Inc.
Additional Information:	The copyright of this article belongs to American Institute of Physics Inc.
Keywords:	Carrier concentration; Cobalt; Cobalt compounds; Coercive force; Ferrite; Iron compounds; Magnesia; Magnetism; Oxide minerals; Pulsed laser deposition; Ruthenium; Ruthenium compounds; Temperature; Thin films; Transport properties, Conduction Mechanism; Hall measurements; Low-temperature regime; Magnetic and electrical transport properties; Orders of magnitude; Perpendicular magnetic anisotropy; Pulsed-laser deposition technique; Temperature variation, Magnetic anisotropy
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	04 Mar 2021 09:46
Last Modified:	04 Mar 2021 09:46
URI:	http://eprints.iisc.ac.in/id/eprint/67948

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