Structural transition of ferromagnetic Ni2MnGa nanoparticles

Y. D. Wang; Y. Ren; Z. H. Nie; D. M. Liu; L. Zuo; H. Choo; H. Li; P. K. Liaw; J. Q. Yan; R. J. McQueeney; J. W. Richardson; A. Huq

doi:10.1063/1.2713370

Structural transition of ferromagnetic Ni₂MnGa nanoparticles

Y. D. Wang^*, Y. Ren, Z. H. Nie, D. M. Liu, L. Zuo, H. Choo, H. Li, P. K. Liaw, J. Q. Yan, R. J. McQueeney, J. W. Richardson, A. Huq

^*Corresponding author for this work

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

62 Citations (Scopus)

Abstract

We report here that the ball-milling process induces the phase transformation from the tetragonal structure to the disordered face-centered-cubic structure in Ni₂MnGa ferromagnetic shape-memory alloys. The in situ high-energy x-ray diffraction analyses reveal that an intermediate phase, which is characterized by amorphous structure, controls the transformation kinetics during the postannealing process. Completely different from their coarse-grained counterparts, the ferromagnetic Ni₂MnGa nanoparticles undergo various sequences of structural transitions that are tailored by the crystallite size, atomic order, and intrinsic magnetic structure.

Original language	English
Article number	063530
Journal	Journal of Applied Physics
Volume	101
Issue number	6
DOIs	https://doi.org/10.1063/1.2713370
Publication status	Published - 2007
Externally published	Yes

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title = "Structural transition of ferromagnetic Ni2MnGa nanoparticles",

abstract = "We report here that the ball-milling process induces the phase transformation from the tetragonal structure to the disordered face-centered-cubic structure in Ni2MnGa ferromagnetic shape-memory alloys. The in situ high-energy x-ray diffraction analyses reveal that an intermediate phase, which is characterized by amorphous structure, controls the transformation kinetics during the postannealing process. Completely different from their coarse-grained counterparts, the ferromagnetic Ni2MnGa nanoparticles undergo various sequences of structural transitions that are tailored by the crystallite size, atomic order, and intrinsic magnetic structure.",

author = "Wang, {Y. D.} and Y. Ren and Nie, {Z. H.} and Liu, {D. M.} and L. Zuo and H. Choo and H. Li and Liaw, {P. K.} and Yan, {J. Q.} and McQueeney, {R. J.} and Richardson, {J. W.} and A. Huq",

year = "2007",

doi = "10.1063/1.2713370",

language = "English",

volume = "101",

journal = "Journal of Applied Physics",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Structural transition of ferromagnetic Ni2MnGa nanoparticles

AU - Wang, Y. D.

AU - Ren, Y.

AU - Nie, Z. H.

AU - Liu, D. M.

AU - Zuo, L.

AU - Choo, H.

AU - Li, H.

AU - Liaw, P. K.

AU - Yan, J. Q.

AU - McQueeney, R. J.

AU - Richardson, J. W.

AU - Huq, A.

PY - 2007

Y1 - 2007

N2 - We report here that the ball-milling process induces the phase transformation from the tetragonal structure to the disordered face-centered-cubic structure in Ni2MnGa ferromagnetic shape-memory alloys. The in situ high-energy x-ray diffraction analyses reveal that an intermediate phase, which is characterized by amorphous structure, controls the transformation kinetics during the postannealing process. Completely different from their coarse-grained counterparts, the ferromagnetic Ni2MnGa nanoparticles undergo various sequences of structural transitions that are tailored by the crystallite size, atomic order, and intrinsic magnetic structure.

AB - We report here that the ball-milling process induces the phase transformation from the tetragonal structure to the disordered face-centered-cubic structure in Ni2MnGa ferromagnetic shape-memory alloys. The in situ high-energy x-ray diffraction analyses reveal that an intermediate phase, which is characterized by amorphous structure, controls the transformation kinetics during the postannealing process. Completely different from their coarse-grained counterparts, the ferromagnetic Ni2MnGa nanoparticles undergo various sequences of structural transitions that are tailored by the crystallite size, atomic order, and intrinsic magnetic structure.

UR - http://www.scopus.com/inward/record.url?scp=34047178901&partnerID=8YFLogxK

U2 - 10.1063/1.2713370

DO - 10.1063/1.2713370

M3 - Article

AN - SCOPUS:34047178901

SN - 0021-8979

VL - 101

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 6

M1 - 063530

ER -

Structural transition of ferromagnetic Ni₂MnGa nanoparticles

Abstract

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