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Title: Magnetic properties of spin frustrated spinel ZnFe{sub 2}O{sub 4}/ZnCr{sub 2}O{sub 4} superlattices

Superlattice films composed of frustrated spin systems, [ZnFe{sub 2}O{sub 4}]{sub m}/[ZnCr{sub 2}O{sub 4}]{sub m}, are grown on MgAl{sub 2}O{sub 4} (111) substrates by pulsed laser deposition, and their frustrated magnetism is studied. The superlattice films show spin-glass behavior and the spin-glass transition temperature (T{sub g}) varies nonmonotonically as a function of the layer thickness m. T{sub g} increases with decreasing m due to an increase in the inhomogeneous exchange interaction between Cr{sup 3+} and Fe{sup 3+} at the interface. However, below m = 4, a decrease in T{sub g} is observed. Compared with the solid solution Zn(CrFe)O{sub 4} film and the other superlattices, the decrease in T{sub g} is considered to be a unique property of the periodically modulated short period superlattices.
Authors:
; ;  [1] ;  [1] ;  [2]
  1. Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656 (Japan)
  2. (CEMS), RIKEN, Wako, Saitama 351-0198 (Japan)
Publication Date:
OSTI Identifier:
22492940
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 19; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHROMIUM IONS; ENERGY BEAM DEPOSITION; EXCHANGE INTERACTIONS; FILMS; IRON IONS; LASER RADIATION; MAGNETIC PROPERTIES; MAGNETISM; PERIODICITY; PULSED IRRADIATION; SOLID SOLUTIONS; SPIN; SPIN GLASS STATE; SPINELS; SUBSTRATES; SUPERLATTICES; THICKNESS; TRANSITION TEMPERATURE