NMR studies of sputtered CoFe alloy thin films

T. Thomson; P. C. Riedi; C L Platt; A E Berkowitz

doi:10.1109/20.706352

NMR studies of sputtered CoFe alloy thin films

T. Thomson, P. C. Riedi, C L Platt, A E Berkowitz

Research output: Contribution to journal › Article › peer-review

Abstract

The inclusion of a Au layer in the magnetic tunnel junction structure Fe/MgO/CoFe substantially alters the magnetic properties. In this work we use zero field 59Co NMR to see if these changes in magnetic properties are correlated with changes in the local atomic environment. The technique of spin-echo NMR allows the effective magnetic field (hyperfine field) at the nucleus to be determined and so provides information on the local atomic environments including strain effects and magnetic moments. The results show that the local atomic environment of Co does not change significantly, however the r.f. power required to obtain the maximum signal is substantially different when the Au layer is included showing that the r.f. electronic enhancement factor changes appreciably. © 1998 IEEE.

Original language	English
Pages (from-to)	1045-1047
Number of pages	2
Journal	Ieee Transactions on Magnetics
Volume	34
Issue number	4
DOIs	https://doi.org/10.1109/20.706352
Publication status	Published - 1998

Keywords

Magnetic tunnel junctions
NMR
Thin films

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10.1109/20.706352

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title = "NMR studies of sputtered CoFe alloy thin films",

abstract = "The inclusion of a Au layer in the magnetic tunnel junction structure Fe/MgO/CoFe substantially alters the magnetic properties. In this work we use zero field 59Co NMR to see if these changes in magnetic properties are correlated with changes in the local atomic environment. The technique of spin-echo NMR allows the effective magnetic field (hyperfine field) at the nucleus to be determined and so provides information on the local atomic environments including strain effects and magnetic moments. The results show that the local atomic environment of Co does not change significantly, however the r.f. power required to obtain the maximum signal is substantially different when the Au layer is included showing that the r.f. electronic enhancement factor changes appreciably. {\textcopyright} 1998 IEEE.",

keywords = "Magnetic tunnel junctions, NMR, Thin films",

author = "T. Thomson and Riedi, {P. C.} and Platt, {C L} and Berkowitz, {A E}",

note = "Thomson, T Riedi, PC Platt, CL Berkowitz, AE 7th Joint MMM-Intermag Conference Jan 06-09, 1998 San francisco, california Part 1",

year = "1998",

doi = "10.1109/20.706352",

language = "English",

volume = "34",

pages = "1045--1047",

journal = "Ieee Transactions on Magnetics",

issn = "0018-9464",

publisher = "IEEE",

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TY - JOUR

T1 - NMR studies of sputtered CoFe alloy thin films

AU - Thomson, T.

AU - Riedi, P. C.

AU - Platt, C L

AU - Berkowitz, A E

N1 - Thomson, T Riedi, PC Platt, CL Berkowitz, AE 7th Joint MMM-Intermag Conference Jan 06-09, 1998 San francisco, california Part 1

PY - 1998

Y1 - 1998

N2 - The inclusion of a Au layer in the magnetic tunnel junction structure Fe/MgO/CoFe substantially alters the magnetic properties. In this work we use zero field 59Co NMR to see if these changes in magnetic properties are correlated with changes in the local atomic environment. The technique of spin-echo NMR allows the effective magnetic field (hyperfine field) at the nucleus to be determined and so provides information on the local atomic environments including strain effects and magnetic moments. The results show that the local atomic environment of Co does not change significantly, however the r.f. power required to obtain the maximum signal is substantially different when the Au layer is included showing that the r.f. electronic enhancement factor changes appreciably. © 1998 IEEE.

AB - The inclusion of a Au layer in the magnetic tunnel junction structure Fe/MgO/CoFe substantially alters the magnetic properties. In this work we use zero field 59Co NMR to see if these changes in magnetic properties are correlated with changes in the local atomic environment. The technique of spin-echo NMR allows the effective magnetic field (hyperfine field) at the nucleus to be determined and so provides information on the local atomic environments including strain effects and magnetic moments. The results show that the local atomic environment of Co does not change significantly, however the r.f. power required to obtain the maximum signal is substantially different when the Au layer is included showing that the r.f. electronic enhancement factor changes appreciably. © 1998 IEEE.

KW - Magnetic tunnel junctions

KW - NMR

KW - Thin films

U2 - 10.1109/20.706352

DO - 10.1109/20.706352

M3 - Article

SN - 0018-9464

VL - 34

SP - 1045

EP - 1047

JO - Ieee Transactions on Magnetics

JF - Ieee Transactions on Magnetics

IS - 4

ER -

NMR studies of sputtered CoFe alloy thin films

Abstract

Keywords

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