Magnetic domain structure in Ni53.6Mn23.4Ga23.0 shape memory alloy films studied by electron holography and Lorentz microscopy

Y. Murakami; D. Shindo; M. Suzuki; M. Ohtsuka; K. Itagaki

doi:10.1016/S1359-6454(02)00431-7

Magnetic domain structure in Ni_53.6Mn_23.4Ga_23.0 shape memory alloy films studied by electron holography and Lorentz microscopy

Y. Murakami, D. Shindo, M. Suzuki, M. Ohtsuka, K. Itagaki

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

17 Citations (Scopus)

Abstract

Magnetic domain structure in Ni_53.6Mn_23.4Ga_23.0 films containing nonmagnetic MnO precipitates was examined by electron holography and Lorentz microscopy. Close experiments discovered peculiar zig-zag-shaped lines of magnetic flux, which are presumably typical configuration in the martensite accompanied by many twin plates. Near the edge of the films, this configuration was modified into a distinct form that was favorable to the reduction of magnetic charges. Inside the martensite plates as crystallographic domains, the lines of magnetic flux were wavy due to the electromagnetic interaction with the nonmagnetic MnO precipitates. The observations have promoted an understanding of the magnetic domain structure in ferromagnetic shape memory alloy films, and also provided essential information for developments of magnetic field-driven microactuators using these films.

Original language	English
Pages (from-to)	485-494
Number of pages	10
Journal	Acta Materialia
Volume	51
Issue number	2
DOIs	https://doi.org/10.1016/S1359-6454(02)00431-7
Publication status	Published - Jan 22 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/S1359-6454(02)00431-7

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title = "Magnetic domain structure in Ni53.6Mn23.4Ga23.0 shape memory alloy films studied by electron holography and Lorentz microscopy",

abstract = "Magnetic domain structure in Ni53.6Mn23.4Ga23.0 films containing nonmagnetic MnO precipitates was examined by electron holography and Lorentz microscopy. Close experiments discovered peculiar zig-zag-shaped lines of magnetic flux, which are presumably typical configuration in the martensite accompanied by many twin plates. Near the edge of the films, this configuration was modified into a distinct form that was favorable to the reduction of magnetic charges. Inside the martensite plates as crystallographic domains, the lines of magnetic flux were wavy due to the electromagnetic interaction with the nonmagnetic MnO precipitates. The observations have promoted an understanding of the magnetic domain structure in ferromagnetic shape memory alloy films, and also provided essential information for developments of magnetic field-driven microactuators using these films.",

author = "Y. Murakami and D. Shindo and M. Suzuki and M. Ohtsuka and K. Itagaki",

note = "Funding Information: This work was supported by the Grant-in-Aid for Young Scientists (Y.M.) from the Ministry of Education, Science, Sports and Culture of Japan, and by the Special Coordination Funds for Promoting Science and Technology on “Nanohetero Metallic Materials” from the Science and Technology Agency.",

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T1 - Magnetic domain structure in Ni53.6Mn23.4Ga23.0 shape memory alloy films studied by electron holography and Lorentz microscopy

AU - Murakami, Y.

AU - Shindo, D.

AU - Suzuki, M.

AU - Ohtsuka, M.

AU - Itagaki, K.

N1 - Funding Information: This work was supported by the Grant-in-Aid for Young Scientists (Y.M.) from the Ministry of Education, Science, Sports and Culture of Japan, and by the Special Coordination Funds for Promoting Science and Technology on “Nanohetero Metallic Materials” from the Science and Technology Agency.

PY - 2003/1/22

Y1 - 2003/1/22

N2 - Magnetic domain structure in Ni53.6Mn23.4Ga23.0 films containing nonmagnetic MnO precipitates was examined by electron holography and Lorentz microscopy. Close experiments discovered peculiar zig-zag-shaped lines of magnetic flux, which are presumably typical configuration in the martensite accompanied by many twin plates. Near the edge of the films, this configuration was modified into a distinct form that was favorable to the reduction of magnetic charges. Inside the martensite plates as crystallographic domains, the lines of magnetic flux were wavy due to the electromagnetic interaction with the nonmagnetic MnO precipitates. The observations have promoted an understanding of the magnetic domain structure in ferromagnetic shape memory alloy films, and also provided essential information for developments of magnetic field-driven microactuators using these films.

AB - Magnetic domain structure in Ni53.6Mn23.4Ga23.0 films containing nonmagnetic MnO precipitates was examined by electron holography and Lorentz microscopy. Close experiments discovered peculiar zig-zag-shaped lines of magnetic flux, which are presumably typical configuration in the martensite accompanied by many twin plates. Near the edge of the films, this configuration was modified into a distinct form that was favorable to the reduction of magnetic charges. Inside the martensite plates as crystallographic domains, the lines of magnetic flux were wavy due to the electromagnetic interaction with the nonmagnetic MnO precipitates. The observations have promoted an understanding of the magnetic domain structure in ferromagnetic shape memory alloy films, and also provided essential information for developments of magnetic field-driven microactuators using these films.

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Magnetic domain structure in Ni_53.6Mn_23.4Ga_23.0 shape memory alloy films studied by electron holography and Lorentz microscopy

Abstract

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