Morphological changes induced by thermal anneals in NiFe/Ag multilayers; their relation to the resistive and magnetoresistive properties

E. Rozenberg; J. Pelleg; M. P. Dariel; D. Mogilaynski; V. Ezersky; G. Sade

doi:10.1016/S0040-6090(97)00403-3

Morphological changes induced by thermal anneals in NiFe/Ag multilayers; their relation to the resistive and magnetoresistive properties

E. Rozenberg
, J. Pelleg
, M. P. Dariel
, D. Mogilaynski
, V. Ezersky
, G. Sade

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

3 Scopus citations

Abstract

X-ray diffraction and simulation were used to characterize the morphological evolution that takes place in permalloy/silver (NiFe/Ag) multilayers as the result of thermal annealing. Auger spectroscopy, electron microscopy, resistivity and magnetoresistivity measurements were performed in order to obtain additional insight into the results. The results are consistent with the model of Ag grain boundary diffusion taking place along the columnar grains, leading to the creation of so-called 'silver bridges' between the permalloy grains. The initial stages of annealing (up to 633 K) result in formation of individual NiFe grains that leads to enhanced values of the magnetoresistivity. Annealing at higher temperatures causes the growth of relatively large Ag and NiFe agglomerates and results in breakup of the original multilayered structure.

Original language	English
Pages (from-to)	171-176
Number of pages	6
Journal	Thin Solid Films
Volume	310
Issue number	1-2
DOIs	https://doi.org/10.1016/S0040-6090(97)00403-3
State	Published - 21 Nov 1997

Keywords

Magnetic properties
Multilayers
Resistivity
X-ray diffraction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1016/S0040-6090(97)00403-3

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@article{1db26ebbb91d4b5b883f35a4783dcfa3,

title = "Morphological changes induced by thermal anneals in NiFe/Ag multilayers; their relation to the resistive and magnetoresistive properties",

abstract = "X-ray diffraction and simulation were used to characterize the morphological evolution that takes place in permalloy/silver (NiFe/Ag) multilayers as the result of thermal annealing. Auger spectroscopy, electron microscopy, resistivity and magnetoresistivity measurements were performed in order to obtain additional insight into the results. The results are consistent with the model of Ag grain boundary diffusion taking place along the columnar grains, leading to the creation of so-called 'silver bridges' between the permalloy grains. The initial stages of annealing (up to 633 K) result in formation of individual NiFe grains that leads to enhanced values of the magnetoresistivity. Annealing at higher temperatures causes the growth of relatively large Ag and NiFe agglomerates and results in breakup of the original multilayered structure.",

keywords = "Magnetic properties, Multilayers, Resistivity, X-ray diffraction",

author = "E. Rozenberg and J. Pelleg and Dariel, \{M. P.\} and D. Mogilaynski and V. Ezersky and G. Sade",

note = "Funding Information: One of the authors (J.P.) acknowledges the financial support of the Sam Ayrton Chair in Metallurgy. This work was supported by Israeli Ministry of Science and Arts under Grant No. 4064-3-95. The authors express thanks to Professor M. Polak and Dr. N. Froumin for the Auger measurements.",

year = "1997",

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doi = "10.1016/S0040-6090(97)00403-3",

language = "English",

volume = "310",

pages = "171--176",

journal = "Thin Solid Films",

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TY - JOUR

T1 - Morphological changes induced by thermal anneals in NiFe/Ag multilayers; their relation to the resistive and magnetoresistive properties

AU - Rozenberg, E.

AU - Pelleg, J.

AU - Dariel, M. P.

AU - Mogilaynski, D.

AU - Ezersky, V.

AU - Sade, G.

N1 - Funding Information: One of the authors (J.P.) acknowledges the financial support of the Sam Ayrton Chair in Metallurgy. This work was supported by Israeli Ministry of Science and Arts under Grant No. 4064-3-95. The authors express thanks to Professor M. Polak and Dr. N. Froumin for the Auger measurements.

PY - 1997/11/21

Y1 - 1997/11/21

N2 - X-ray diffraction and simulation were used to characterize the morphological evolution that takes place in permalloy/silver (NiFe/Ag) multilayers as the result of thermal annealing. Auger spectroscopy, electron microscopy, resistivity and magnetoresistivity measurements were performed in order to obtain additional insight into the results. The results are consistent with the model of Ag grain boundary diffusion taking place along the columnar grains, leading to the creation of so-called 'silver bridges' between the permalloy grains. The initial stages of annealing (up to 633 K) result in formation of individual NiFe grains that leads to enhanced values of the magnetoresistivity. Annealing at higher temperatures causes the growth of relatively large Ag and NiFe agglomerates and results in breakup of the original multilayered structure.

AB - X-ray diffraction and simulation were used to characterize the morphological evolution that takes place in permalloy/silver (NiFe/Ag) multilayers as the result of thermal annealing. Auger spectroscopy, electron microscopy, resistivity and magnetoresistivity measurements were performed in order to obtain additional insight into the results. The results are consistent with the model of Ag grain boundary diffusion taking place along the columnar grains, leading to the creation of so-called 'silver bridges' between the permalloy grains. The initial stages of annealing (up to 633 K) result in formation of individual NiFe grains that leads to enhanced values of the magnetoresistivity. Annealing at higher temperatures causes the growth of relatively large Ag and NiFe agglomerates and results in breakup of the original multilayered structure.

KW - Magnetic properties

KW - Multilayers

KW - Resistivity

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/0031274141

U2 - 10.1016/S0040-6090(97)00403-3

DO - 10.1016/S0040-6090(97)00403-3

M3 - Article

AN - SCOPUS:0031274141

SN - 0040-6090

VL - 310

SP - 171

EP - 176

JO - Thin Solid Films

JF - Thin Solid Films

IS - 1-2

ER -

Morphological changes induced by thermal anneals in NiFe/Ag multilayers; their relation to the resistive and magnetoresistive properties

Abstract

Keywords

ASJC Scopus subject areas

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