Magnetic phase diagrams of Ce2Fe17−xMnx–H system: A magnetization study

Magnetocaloric effect in the Ce2Fe17−xMnx helical magnets

“…To verify the validity of this conception, the MCE of the Ce 2 Fe 17−x Mn x H y hydrides will be studied in the next our paper. Earlier, we have shown that hydrogenation leads to the ferromagnetism strengthening in the Ce 2 Fe 17−x Mn x H y system [20,[23][24][25].…”

“…On the contrary, in the Ce 2 Fe 17−x Mn x compounds with x = 0-0.35 the magnetic phase transition at T = T between ground collinear ferromagnetic state and helical antiferromagnetic one is rather abrupt [26,28] and characterized by higher ␦M/␦T values in comparison with those with x = 1.3-2 [24,25]. Therefore, two peak values of − S M (T) at T and T N are similar in high fields for the compounds with x = 0-0.35 (Figs.…”

“…[24,25]; so only the phase transition the "induced ferromagnet-paramagnet" type remains. This is why the highertemperature transition in these compounds displays a much larger magnetic entropy change than that accompanying the lowertemperature transition starting with about 1.5 T field (Fig.…”

“…This would allow us a better understanding of the interrelation between the magnetic phase transitions and the MCE. The next our paper will be devoted to the MCE in the Ce 2 Fe 17−x Mn x H y hydrides where the Curie temperature and spontaneous magnetization rise sharply with Mn content [20,[23][24][25].…”

Magnetic and structural properties of Lu2(Fe,Mn)17Hyhydrides

“…It was found that hydrogenation of the Lu 2 Fe 17−x Si x H y [3], Ce 2 Fe 17 H y [4] and Ce 2 Fe 17−x Mn x H y [5][6][7] systems, when the y index is in the range of y 2, causes the T C to increase, leaving the lattice parameter c unchanged, or even slightly diminished. This is somewhat unusual because the R 2 Fe 17 compounds were observed to have a linear relationship between the T C and lattice parameters, as a rule.…”