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2015 | 128 | 1 | 120-122
Article title

Magnetocaloric Effect in Ni-Cu-Mn-Gd-Ga Alloy. XI Symposium of Magnetic Measurements

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EN
Abstracts
EN
The magnetocaloric effect of the Ni-Cu-Mn-Gd-Ga polycrystalline alloy was investigated. The nominal composition of the alloy was Ni_{50}Cu_{6.25}Mn_{16.75}Ga_{25}Gd_{2} at.%. The X-ray diffraction studies revealed presence of two phases at room temperature. This was confirmed by magnetic measurements conducted in low field of 4 kA/m (50 Oe), which showed two Curie transition temperatures, one in vicinity and the other one well above the room temperature. The analysis of isothermal magnetic curves allowed the calculation of magnetic entropy change (ΔS_{M}). Although the peak value of |ΔS_{M}| is relatively low, ≈1.1 J/(kg K), it is very broad. The adiabatic temperature change (ΔT) measured near room temperature is ≈0.49 K. Such result is irrespective of the magnetizing-demagnetizing cycle frequency which varied from 2/min to 10/min.
Keywords
EN
Year
Volume
128
Issue
1
Pages
120-122
Physical description
Dates
published
2015-7
received
2015-02-02
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv128n126kz
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