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

Journal Article · Sat Nov 21 00:00:00 EST 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4935818· OSTI ID:22492940

Murata, T.; Uchida, M. ^[1]; Kawasaki, M. ^[1]

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1. Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656 (Japan)

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.

• OSTI ID: 22492940
• Journal Information: Journal of Applied Physics, Vol. 118, Issue 19; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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