E. P. Skipetrov, A. A. Solov'ev, V. E. Slynko, “Contribution of iron clusters to the magnetic properties of Pb$_{1-y}$Fe$_{y}$Te alloys”, Fizika i Tekhnika Poluprovodnikov, 2018, Volume 52, Issue 6,Pages 538

This article is cited in 2 papers

Electronic properties of semiconductors

Contribution of iron clusters to the magnetic properties of Pb$_{1-y}$Fe$_{y}$Te alloys

E. P. Skipetrov^a, A. A. Solov'ev^a, V. E. Slynko^b

^a Faculty of Physics, Lomonosov Moscow State University
^b Frantsevich Institute of Materials Science Problems, National Academy of Sciences of Ukraine, Kiev

Abstract: The field dependences of the magnetization (temperatures $T$ = 2.0–70 K, magnetic fields $B\le$ 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.

Received: 18.05.2017
Accepted: 30.05.2017

DOI: 10.21883/FTP.2018.06.45912.8653