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Microstructures and magnetostrictive strains of Fe-Ga-Ni ferromagnetic shape memory alloys
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10.1063/1.4793609
/content/aip/journal/jap/113/17/10.1063/1.4793609
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4793609
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Figures

Image of FIG. 1.
FIG. 1.

TEM images of the FeGa (at. %) alloy ST at 1100 °C for 4 h andquenched in ice brine: (a) SADP of zone axis [ 11]//[3 3] (denotes SRO D0 reflection; hkl denotes disordered A2 structure); (b) DF image of (10 ) reflection corresponding to (a); (c) DF image of superlattice (1 2) reflection corresponding to (a); and (d) BF image.

Image of FIG. 2.
FIG. 2.

TEM micrographs of the FeGa alloy ST, aged at 750 °C for 24 h, and FC: (a) BF image of the coarse B2 + D0 precipitates, indicated by arrow; (b) NBDP of zone axis [ 0 ]//[ 0 ] ( denotes ordered D0 reflection; denotes ordered B2 structure); (c) NBDP of zone axis [100]//[100]; (d)DF image of (002) reflection corresponding to (c); (e) HRTEM image showing spacing of the (111) and (100); (f) HRTEM image showing spacing of the (002) or (001), and (010), respectively.

Image of FIG. 3.
FIG. 3.

TEM images of the FeGaNi alloy ST at 1100 °C for 4 h and quenched in ice brine: (a) SADP of zone axis [ 11]//[ 1 ] ( denotes SRO D0 reflection; hkl denotes disordered A2 structure); (b) DF image of( 12) reflection corresponding to (a); (c) DF image of superlattice (01 ) reflection corresponding to (a); and (d) BF image.

Image of FIG. 4.
FIG. 4.

TEM images of the FeGaNi alloy ST, aged at 750 °C for 24 h, and FC: (a) BF images, the B2 + D0 precipitates indicated by arrow; (b) SADP of zone axis [ 01]//[ 0 ]//[35 ] ( denotes ordered D0 reflection; denotes ordered B2 structure; hkl denotes disordered A2 structure); (c) DF image of (202) reflection corresponding to (b); (d)–(e) BF images showing B2 + D0 precipitates; (f) HRTEM image showing spacing of the (111) and (101), respectively.

Image of FIG. 5.
FIG. 5.

The linear saturation magnetostriction λ (×10) vs. magnetic field () λ curves measured at room temperature: (a) FeGa and (b) FeGaNi alloys 1100 °C/4 h ST and quenched in ice brine; (c) FeGa and (d) FeGaNi alloys ST, aged at 750 °C for 24 h, and FC.

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/content/aip/journal/jap/113/17/10.1063/1.4793609
2013-02-27
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microstructures and magnetostrictive strains of Fe-Ga-Ni ferromagnetic shape memory alloys
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4793609
10.1063/1.4793609
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