@article{article_532422, title={MAGNETOCALORIC EFFECT AROUND CURIE TEMPERATURE IN Ni50-x CuxMn38Sn12B3 SHAPE MEMORY RIBBONS}, journal={Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering}, volume={61}, pages={150–160}, year={2019}, DOI={10.33769/aupse.532422}, author={Kızılaslan, Olcay}, keywords={Ni-Mn-Sn Heusler Alloys,Magnetocaloric Effect,Magnetic Properties}, abstract={<p class="MsoNormal" style="text-align:justify;text-indent:35.45pt;line-height:200%;"> <span style="font-size:12pt;line-height:200%;font-family:’Times New Roman’, serif;">The
magnetocaloric effect in Ni <sub>50-x </sub>Cu <sub>x </sub>Mn <sub>38 </sub>Sn <sub>12 </sub>B <sub>3 </sub>
ribbons depending on the Cu substitution (x= 0, 1, 3) was investigated around the
Curie temperature. The purpose of the present study was to analyze the
magnetocaloric effect around a second order phase transition (around the Curie
temperature) which has a smaller thermal hysteresis compared to a first order
phase transition (Martensitic transition). The Curie temperature of the ribbons
shifted to higher temperatures with increasing Cu content. A conventional magnetocaloric effect
(MCE) was observed around the Curie temperature when the ribbons are subjected
to a magnetic field change of 5 T. The magnetic entropy changes were
calculated based on the isothermal magnetization </span> <span style="font-size:11pt;line-height:107%;font-family:Calibri, sans-serif;"> </span> <span style="font-size:12pt;line-height:200%;">  </span> <span style="font-size:12pt;line-height:200%;font-family:’Times New Roman’, serif;">data using thermodynamic
Maxwell equation. The highest magnetic entropy change and the </span> <span style="font-size:12pt;line-height:200%;font-family:’Times New Roman’, serif;">refrigerant
capacity </span> <span style="font-size:12pt;line-height:200%;font-family:’Times New Roman’, serif;"> </span> <span style="font-size:12pt;line-height:200%;font-family:’Times New Roman’, serif;">was
obtained for the x=1 ribbon.  </span> <span style="font-size:12pt;line-height:200%;font-family:’Times New Roman’, serif;"> </span> </p> <p> </p>}, number={2}, publisher={Ankara University}