Field-Induced Transition in (Nd,Dy)<sub>2</sub>Fe<sub>14</sub>B in Ultrahigh Magnetic Fields

oleh: N. V. Kostyuchenko, I. S. Tereshina, A. I. Bykov, S. V. Galanova, R. V. Kozabaranov, A. S. Korshunov, I. S. Strelkov, I. V. Makarov, A. V. Filippov, Yu. B. Kudasov, D. A. Maslov, V. V. Platonov, O. M. Surdin, P. B. Repin, V. D. Selemir, A. K. Zvezdin

Format: Article
Diterbitkan: MDPI AG 2022-11-01

Deskripsi

We demonstrate the peculiarities of the magnetization process in the ferrimagnetic intermetallic compound (Nd<sub>0.5</sub>Dy<sub>0.5</sub>)<sub>2</sub>Fe<sub>14</sub>B, which has been studied theoretically and experimentally using ultrahigh magnetic fields. We observe phase transition induced by external ultrahigh magnetic fields (up to 170 T) and also describe the magnetization process analytically in terms of critical transition fields. In this work, the first and second critical fields of the field-induced magnetic transitions, <i>H</i><sub>c1</sub> and <i>H</i><sub>c2</sub>, were estimated, and the results were verified against experimental data for <i>H</i><sub>c1</sub>. Critical field <i>H</i><sub>c2</sub> predicting the place of transition to the forced-ferromagnetic state was estimated for the first time for (Nd<sub>0.5</sub>Dy<sub>0.5</sub>)<sub>2</sub>Fe<sub>14</sub>B compound. A comparison of the magnetization behavior for (Nd<sub>0.5</sub>Dy<sub>0.5</sub>)<sub>2</sub>Fe<sub>14</sub>B with the basic systems Nd<sub>2</sub>Fe<sub>14</sub>B and Dy<sub>2</sub>Fe<sub>14</sub>B is also performed. We demonstrate that, in the Dy<sub>2</sub>Fe<sub>14</sub>B compound, the field-induced transition type is changed from the first to the second order due to the replacement of the Nd atom by Dy one.