Multifunctional phenomena in sublimed dysprosium in high magnetic fields: The magnetocaloric effect and magnetostriction

Magnetic phase diagrams of Gd-H, Tb-H, Dy-H systems

“…The Néel temperatures of DyH x decrease from 184 to 182 K, and the temperature θ decreases from 94 to 89 K when x varies between 0 and 1.2 H/Dy. Although the variations in the R phase transition temperatures ranging between 1 and 5 degrees were also recorded previously [28][29][30], they cannot be attributed to a particular impurity but rather to a mixture of impurities absorbed by a metal. In this study, we were able to identify the real magnetic phase transitions temperatures and their variation as a function of hydrogen impurity content in Gd, Tb and Dy by using parent high purity samples and then those with a controlled impurity composition.…”

Giant forced magnetostriction in Tb0.2Gd0.8 single crystal

“…The theory of magnetostriction of REM was developed and formulated by Callen [4] and Clark [5]. Previously, the study of forced magnetostriction was carried out on the polycrystalline and single-crystal samples of REM [6][7][8][9] and their alloys [1,2,[10][11][12]. Tb-Gd single crystal alloys are widely used in prototypes of magnetic refrigerators due to giant reversible magnetocaloric effect observed in them near room temperature [13][14][15][16].…”