Open AccessФазовое разделение в слоях GaMnAs, сформированных импульсным лазерным осаждением
Author(s) -
З.Э. Кунькова,
Е.А. Ганьшина,
Л.Л. Голик,
Ю.А. Данилов,
А.В. Кудрин,
В.И. Ковалев,
Г.С. Зыков,
Ю.В. Маркин,
О.В. Вихрова,
Б.Н. Звонков
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.05.45790.290
Subject(s) - ferromagnetism , ellipsometry , materials science , condensed matter physics , paramagnetism , magnetometer , deposition (geology) , electrical resistivity and conductivity , spectroscopy , hall effect , pulsed laser deposition , magnetic field , thin film , physics , nanotechnology , paleontology , quantum mechanics , sediment , biology
GaMnAs layers grown by pulsed laser deposition were studied by magneto-optical transversal Kerr effect spectroscopy, spectral ellipsometry, resistivity and the Hall effect measurements, and magnetometry. The growth regimes for magnetically inhomogeneous layers containing Mn-enriched ferromagnetic regions with different composition and sizes were established. The layers grown at a temperature of 300°C exhibit a ferromagnetic behavior at temperatures below 80 K, which is conditioned by the presence of local ferromagnetic (Ga,Mn)As regions in the paramagnetic matrix. The nature of peculiarities in the TKE spectrum of these layers is discussed.