MAYER, Charlotte; CHEVALIER, Bernard; GORSSE, Stéphane

doi:10.1016/j.jallcom.2010.07.210

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MAYER, Charlotte
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

CHEVALIER, Bernard
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

GORSSE, Stéphane
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Alloys and Compounds. 2010, vol. 507, n° 2, p. 370-375

Elsevier

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Magnetocaloric effect and refrigeration capacity (RC) of Gd60Mn30Ga10 and Gd60Mn30In10 melt-spun nanocomposites are investigated. It is found that the nanocrystallites formed in the amorphous matrix are different between melt-spun Gd60Mn30Ga10 and Gd60Mn30In10 samples. Gd60Mn30Ga10 ribbons exhibit multiple second-order transitions in accordance to their composite nature whereas Gd60Mn30In10 ribbons display only one magnetic transition. The occurrence of several transitions increases the gap of temperature at half maximum value of the ΔSM magnetic entropy, thus increasing the RC values of these materials. The use of Mn as transition metal induces Curie temperature values around 170–180 K and an antiferromagnetic coupling with Gd reducing the overall magnetization compared to that calculated considering the free Gd3+ ion.< Réduire

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Metallic glasses

Nanocomposites

X-ray powder diffraction

Magnetocaloric effect

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Magnetic and magnetocaloric properties of the ternary Gd-based metallic glasses Gd<sub>60</sub>Mn<sub>30</sub>X<sub>10</sub>, with X = Al, Ga, In

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