Mechanism of elastic softening behavior in a superlattice

Nakamura, Nobutomo; Ogi, Hirotsugu; Yasui, Takeshi et al.

Physical Review Letters, 2007, 99(3), 035502-1-035502-4

Number of Access:663（2025-11-25 02:18 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84183

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Title
Mechanism of elastic softening behavior in a superlattice
Creator
NRID
1000050452404 1000050452404
researchmap permalink
nnakamura nnakamura
Scopus Author ID
7403356186 7403356186
ORCID
0000-0002-5338-842X 0000-0002-5338-842X
CreatorName
Nakamura, Nobutomo
NRID
1000090252626 1000090252626
researchmap permalink
read0042771 read0042771
Scopus Author ID
35563683500 35563683500
ORCID
0000-0002-9602-5194 0000-0002-9602-5194
CreatorName
Ogi, Hirotsugu
NRID
1000070314408 1000070314408
CreatorName
Yasui, Takeshi
NRID
1000010803760 1000010803760
ORCID
0000-0003-4436-7456 0000-0003-4436-7456
researchmap permalink
m-fujii m-fujii
Scopus Author ID
55738467300 55738467300
CreatorName
Fujii, Makoto
NRID
1000080112027 1000080112027
CreatorName
Hirao, Masahiko
Description
Nakamura N., Ogi H., Yasui T., et al. "Mechanism of elastic softening behavior in a superlattice", Physical Review Letters, 99(3), 035502, 2007. https://doi.org/10.1103/PhysRevLett.99.035502.
Abstract
We measured the out-of-plane elastic constants C33 of a Co/Pt superlattice by picosecond ultrasound, and found that they were closely related to the thickness ratio of Co and Pt layers; C33 was smaller than the prediction from the bulk values except for a specific thickness ratio. This behavior can be explained by the weak bonding at the interfaces that occurs to reduce the elastic strain energy, not by the interfacial strain. This view explained the relationship among C33, the elastic strain energy, and perpendicular magnetic anisotropy. © 2007 The American Physical Society.
Publisher
American Physical Society
Source Title
Physical Review Letters
Volume (Issue)
99(3)
Page
035502-1-035502-4
Date of Issued
2007-07-19
Language
English
Handle URL
https://hdl.handle.net/11094/84183
PISSN
00319007
eISSN
10797114
NCID
AA11734748
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1103/PhysRevLett.99.035502
Access Rights
open access
CopyRight
Copyright 2007 by the American Physical Society
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Version of Record
Category
学術雑誌論文 Journal Article