TEM studies of crystallographic and magnetic microstructures in Ni-based ferromagnetic shape memory alloys

Y. Murakami; D. Shindo; K. Kobayashi; K. Oikawa; R. Kainuma; K. Ishida

doi:10.1016/j.msea.2006.05.016

TEM studies of crystallographic and magnetic microstructures in Ni-based ferromagnetic shape memory alloys

Y. Murakami, D. Shindo, K. Kobayashi, K. Oikawa, R. Kainuma, K. Ishida

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

24 Citations (Scopus)

Abstract

Magnetic domains in the L2₁ phase of Ni₂Mn(Al,Ga) - a series of ferromagnetic Heusler alloys, which can undergo martensitic transformations in cases of off-stoichiometric compositions - have been studied by the defocus mode of Lorentz microscopy. One-to-one correspondence was observed between the magnetic domain walls and antiphase boundaries (APBs). The result indicates that the APBs are strong pinning sites for the motion of magnetic domain walls. Effects of applying a weak magnetic field to the magnetic domains were studied by in situ observations of Lorentz microscopy.

Original language	English
Pages (from-to)	1050-1053
Number of pages	4
Journal	Materials Science and Engineering A
Volume	438-440
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.msea.2006.05.016
Publication status	Published - Nov 25 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

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10.1016/j.msea.2006.05.016

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title = "TEM studies of crystallographic and magnetic microstructures in Ni-based ferromagnetic shape memory alloys",

abstract = "Magnetic domains in the L21 phase of Ni2Mn(Al,Ga) - a series of ferromagnetic Heusler alloys, which can undergo martensitic transformations in cases of off-stoichiometric compositions - have been studied by the defocus mode of Lorentz microscopy. One-to-one correspondence was observed between the magnetic domain walls and antiphase boundaries (APBs). The result indicates that the APBs are strong pinning sites for the motion of magnetic domain walls. Effects of applying a weak magnetic field to the magnetic domains were studied by in situ observations of Lorentz microscopy.",

author = "Y. Murakami and D. Shindo and K. Kobayashi and K. Oikawa and R. Kainuma and K. Ishida",

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T1 - TEM studies of crystallographic and magnetic microstructures in Ni-based ferromagnetic shape memory alloys

AU - Murakami, Y.

AU - Shindo, D.

AU - Kobayashi, K.

AU - Oikawa, K.

AU - Kainuma, R.

AU - Ishida, K.

PY - 2006/11/25

Y1 - 2006/11/25

N2 - Magnetic domains in the L21 phase of Ni2Mn(Al,Ga) - a series of ferromagnetic Heusler alloys, which can undergo martensitic transformations in cases of off-stoichiometric compositions - have been studied by the defocus mode of Lorentz microscopy. One-to-one correspondence was observed between the magnetic domain walls and antiphase boundaries (APBs). The result indicates that the APBs are strong pinning sites for the motion of magnetic domain walls. Effects of applying a weak magnetic field to the magnetic domains were studied by in situ observations of Lorentz microscopy.

AB - Magnetic domains in the L21 phase of Ni2Mn(Al,Ga) - a series of ferromagnetic Heusler alloys, which can undergo martensitic transformations in cases of off-stoichiometric compositions - have been studied by the defocus mode of Lorentz microscopy. One-to-one correspondence was observed between the magnetic domain walls and antiphase boundaries (APBs). The result indicates that the APBs are strong pinning sites for the motion of magnetic domain walls. Effects of applying a weak magnetic field to the magnetic domains were studied by in situ observations of Lorentz microscopy.

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VL - 438-440

SP - 1050

EP - 1053

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

IS - SPEC. ISS.

ER -

TEM studies of crystallographic and magnetic microstructures in Ni-based ferromagnetic shape memory alloys

Abstract

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