Low-Temperature Magnetic Hysteresis in Nd(Pr)-Fe-B Nanostructured Alloys with Nd2Fe14B Type Main Phase Composition

Autor: Neznakhin, Dmitriy Sergeevich, Politova, Galina Aleksandrovna, Ivanov, Lev Aleksandrovich, Volegov, Aleksey Sergeevich, Gorbunov, Denis Ivanovich, Tereshina, Irina Semenovna, Kudrevatykh, Nikolay Vladimirovich
Zdroj: Diffusion and Defect Data Part A: Defect and Diffusion Forum; September 2018, Vol. 386 Issue: 1 p125-130, 6p
Abstrakt: Magnetic hysteresis properties of nanostructured industrially manufactured Nd-Fe-B and Pr-Fe-B alloys on the base of a tetragonal Nd2Fe14B (2-14-1) hard magnetic phase (MQP-B, MQP-B+ and MQP-16-7 brands) have been investigated at 4.2 K in magnetic fields up to 58 T. The chemical composition of the alloys given in the certificates was defined more precisely. The grain sizes of the main 2-14-1 phase were determined. The average grain size is much smaller than a critical single domain diameter. Coercivity, remanence magnetization, saturation magnetization and maximal magnetic energy product were determined at 4.2 K and compared with those obtained at room temperature.
Databáze: Supplemental Index