Magnetic and conversion electron Mössbauer spectroscopy studies in Fe/Ta multilayers

We have prepared Fe/Ta multilayers by rf sputtering. A small 1-cm2 chip of 57Fe was placed on the Fe target. We studied the magnetization (M) and M-H loops and also carried out conversion electron Mössbauer spectroscopy (CEMS). The in-plane loops are rectangular with a lowest coercivity of 2.6 Oe. M...

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Published in:Journal of applied physics 1993-05, Vol.73 (10), p.6438-6440
Main Authors: SHRINGI, S. N, PIRAMANAYAGAM, S. N, SHIVA PRASAD, VANKATRAMANI, N, PATNI, M. J, KRISHNAN, R, TESSIER, M
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Metals. Metallurgy
Physics
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cited_by cdi_FETCH-LOGICAL-c320t-740718f69a1d3f6350c4ff02f428dd79ba5c59810c58bb9e5c9b8a47be9965883
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container_end_page 6440
container_issue 10
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container_title Journal of applied physics
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creator SHRINGI, S. N
PIRAMANAYAGAM, S. N
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description We have prepared Fe/Ta multilayers by rf sputtering. A small 1-cm2 chip of 57Fe was placed on the Fe target. We studied the magnetization (M) and M-H loops and also carried out conversion electron Mössbauer spectroscopy (CEMS). The in-plane loops are rectangular with a lowest coercivity of 2.6 Oe. Magnetization studies indicate a dead Fe layer about 5 Å thick at each interface. CEMS spectra for samples with t(Fe)≥54 Å showed a typical six-line pattern, indicating the presence of bulk Fe. No other Fe sites could be detected. However, for t(Fe)=24 Å, where almost 50% of Fe is nonmagnetic, CEMS spectra showed the presence of a strong paramagnetic doublet.
doi_str_mv 10.1063/1.352625
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subjects Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Metals. Metallurgy
Physics
title Magnetic and conversion electron Mössbauer spectroscopy studies in Fe/Ta multilayers
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