Open AccessВклад кластеров железа в магнитные свойства сплавов Pb-=SUB=-1-y-=/SUB=-Fe-=SUB=-y-=/SUB=-Te
Author(s) -
E. P. Skipetrov,
А. А. Соловьев,
В. И. Слынько
Publication year - 2018
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2018.06.45912.8653
Subject(s) - diamagnetism , paramagnetism , magnetization , condensed matter physics , magnetic moment , brillouin zone , brillouin and langevin functions , ion , impurity , materials science , magnetic field , chemistry , physics , organic chemistry , quantum mechanics
The field dependences of the magnetization (temperatures T = 2.0–70 K, magnetic fields B ≤ 7.5 T) of the samples from a single-crystalline Pb_1 – y Fe_ y Te ingot ( y = 0.02) grown by the Bridgman method are studied. It is established that the sample magnetization contains several major contributions such as the paramagnetism of iron ions, diamagnetism of the crystal lattice, and the contributions of charge carriers and clusters of iron atoms. The field dependences of the paramagnetic contribution of iron ions and the contribution of clusters of iron atoms are approximated by theoretical dependences based on the Brillouin and Langevin functions, respectively. The average concentrations and magnetic moment of clusters as well as the total magnetic momentum of clusters in the volume unit in the samples upon increasing the impurity concentration along the ingot are determined.