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Readout of Magnetic Film-Based Memories by Nonlinear-Optical Magnetic Kerr Effect

Published online by Cambridge University Press:  10 February 2011

T.V. Murzina
Affiliation:
Physics Department, Moscow State University, Vorobyovi Gori, 119899 Moscow, Russia
N.V. Didenko
Affiliation:
Physics Department, Moscow State University, Vorobyovi Gori, 119899 Moscow, Russia
A.A. Fedyanin
Affiliation:
Physics Department, Moscow State University, Vorobyovi Gori, 119899 Moscow, Russia
A.V. Melnikov
Affiliation:
Physics Department, Moscow State University, Vorobyovi Gori, 119899 Moscow, Russia
T.V. Misuryaev
Affiliation:
Physics Department, Moscow State University, Vorobyovi Gori, 119899 Moscow, Russia
O.A. Aktsipetrov
Affiliation:
Physics Department, Moscow State University, Vorobyovi Gori, 119899 Moscow, Russia, aktsip@astral.ilc.msu.su
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Abstract

Magnetic field induced second harmonic generation (MSHG) is suggested as a nonlinear-optical readout for magnetic film-based memories: Systematic studies of the nonlinear-optical magnetic Kerr effect and MSHG interferometry are carried out for (i) magnetic rare-earth iron garnet films, (ii) Gd-containing Langmuir-Blodgett films and (iii) CoxCu1-x granular films. The magneto-induced nonlinear-optical properties of thin films being used for recording the information can be easily distinguished by the MSHG nondestructive probe. An estimation of the signal-to-noise ratio (readout error) shows an acceptable value of the magnetic contrast for this potential readout.

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

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