Direct measurement of local magnetic moments at grain boundaries in iron

Seiichiro Ii; Kyosuke Hirayama; Kyohei Matsunaga; Hiromichi Fujii; Sadahiro Tsurekawa

doi:10.1016/j.scriptamat.2012.10.028

Direct measurement of local magnetic moments at grain boundaries in iron

Seiichiro Ii, Kyosuke Hirayama, Kyohei Matsunaga, Hiromichi Fujii, Sadahiro Tsurekawa

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

20 Citations (Scopus)

Abstract

We have succeeded for the first time to directly measure the local magnetic moments in the vicinity of well-characterized grain boundaries in pure iron by electron energy loss spectroscopy on transmission electron microscope. The measured local magnetic moments are larger at the grain boundary than in the grain interior. This enhancement of magnetic moments depends on the grain boundary character. These findings suggest that the local magnetic moments at grain boundaries are likely to correlate with the free volume at grain boundaries.

Original language	English
Pages (from-to)	253-256
Number of pages	4
Journal	Scripta Materialia
Volume	68
Issue number	5
DOIs	https://doi.org/10.1016/j.scriptamat.2012.10.028
Publication status	Published - Mar 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2012.10.028

Cite this

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title = "Direct measurement of local magnetic moments at grain boundaries in iron",

abstract = "We have succeeded for the first time to directly measure the local magnetic moments in the vicinity of well-characterized grain boundaries in pure iron by electron energy loss spectroscopy on transmission electron microscope. The measured local magnetic moments are larger at the grain boundary than in the grain interior. This enhancement of magnetic moments depends on the grain boundary character. These findings suggest that the local magnetic moments at grain boundaries are likely to correlate with the free volume at grain boundaries.",

author = "Seiichiro Ii and Kyosuke Hirayama and Kyohei Matsunaga and Hiromichi Fujii and Sadahiro Tsurekawa",

note = "Funding Information: The authors acknowledge Prof. R.Tomoshige at Sojo University for kindly permitting the use of the transmission electron microscope and Prof. M. {\v S}ob at Masaryk University for the fruitful discussion on local magnetic moments. We thank Dr. T. Yamamuro and Mr. H. Matsumoto at Kumamoto University for the development of the software for the calculation of the intensity of the L 3 and L 2 edges in the EELS spectra. This work was supported by Grant-in-Aid for Scientific Research (S) (19106013) from the Japan Society for the Promotion of Science (JSPS), Japan. ",

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doi = "10.1016/j.scriptamat.2012.10.028",

language = "English",

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AU - Ii, Seiichiro

AU - Hirayama, Kyosuke

AU - Matsunaga, Kyohei

AU - Fujii, Hiromichi

AU - Tsurekawa, Sadahiro

N1 - Funding Information: The authors acknowledge Prof. R.Tomoshige at Sojo University for kindly permitting the use of the transmission electron microscope and Prof. M. Šob at Masaryk University for the fruitful discussion on local magnetic moments. We thank Dr. T. Yamamuro and Mr. H. Matsumoto at Kumamoto University for the development of the software for the calculation of the intensity of the L 3 and L 2 edges in the EELS spectra. This work was supported by Grant-in-Aid for Scientific Research (S) (19106013) from the Japan Society for the Promotion of Science (JSPS), Japan.

PY - 2013/3

Y1 - 2013/3

N2 - We have succeeded for the first time to directly measure the local magnetic moments in the vicinity of well-characterized grain boundaries in pure iron by electron energy loss spectroscopy on transmission electron microscope. The measured local magnetic moments are larger at the grain boundary than in the grain interior. This enhancement of magnetic moments depends on the grain boundary character. These findings suggest that the local magnetic moments at grain boundaries are likely to correlate with the free volume at grain boundaries.

AB - We have succeeded for the first time to directly measure the local magnetic moments in the vicinity of well-characterized grain boundaries in pure iron by electron energy loss spectroscopy on transmission electron microscope. The measured local magnetic moments are larger at the grain boundary than in the grain interior. This enhancement of magnetic moments depends on the grain boundary character. These findings suggest that the local magnetic moments at grain boundaries are likely to correlate with the free volume at grain boundaries.

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Direct measurement of local magnetic moments at grain boundaries in iron

Abstract

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