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Structure and magnetic properties of highly dispersed Ni-Mn-Ga powders prepared by spark-erosion
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10.1063/1.4764017
/content/aip/journal/jap/112/9/10.1063/1.4764017
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/9/10.1063/1.4764017

Figures

Image of FIG. 1.
FIG. 1.

(a) Micrograph of the spark-eroded powder of Ni50,3Mn30Ga19,7 obtained in ethanol; (b) size distribution of the particles in this powder.

Image of FIG. 2.
FIG. 2.

X-ray diffraction patterns of spark-eroded powders of Ni50,3Mn30Ga19,7 obtained in ethanol in the as-prepared state and after annealing at 873 K and 1073 K for 30 min.

Image of FIG. 3.
FIG. 3.

X-ray diffraction patterns of as-prepared spark-eroded powders of Ni-Mn-Ga obtained in water, kerosene, and ethanol.

Image of FIG. 4.
FIG. 4.

Magnetization loops (top) and ZFC-FC dependencies at low (50 Oe) and high (30 kOe) fields (bottom) for the spark-eroded powders of Ni50,3Mn30Ga19,7 before (left panel) and after annealing (right panel).

Image of FIG. 5.
FIG. 5.

Dependences of the magnetization of the melt-spun ribbon, mechanically milled powder, and spark-eroded powder as a function of the external magnetic field/temperature ratio.

Image of FIG. 6.
FIG. 6.

Magnetization loops (top) and ZFC-FC dependencies at low (50 Oe) and high (30 kOe) fields (bottom) for the mechanically milled powders of Ni50,3Mn30Ga19,7 before (left panel) and after annealing (right panel).

Image of FIG. 7.
FIG. 7.

Magnetization loops (top) and ZFC-FC dependencies at low (50 Oe) and high (30 kOe) fields (bottom) for the rapidly quenched ribbon Ni54.3Mn20.5Ga25.2 before (left panel) and after annealing (right panel).

Tables

Generic image for table
Table I.

Average domain size of different phases for as prepared SEPs cooled in different liquids.

Generic image for table
Table II.

Average domain size of different phases for as prepared and annealed SEP cooled in ethanol.

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/content/aip/journal/jap/112/9/10.1063/1.4764017
2012-11-05
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Structure and magnetic properties of highly dispersed Ni-Mn-Ga powders prepared by spark-erosion
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/9/10.1063/1.4764017
10.1063/1.4764017
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