Open AccessСпин-волновой резонанс в тонких пленках Ge : Mn с перколяционным магнитным упорядочением
Author(s) -
А.И. Дмитриев,
М.С. Дмитриева,
Г.Г. Зиборов
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.05.45787.326
Subject(s) - curie temperature , condensed matter physics , percolation (cognitive psychology) , excitation , percolation theory , manganese , spin wave , percolation threshold , curie , rigidity (electromagnetism) , thin film , materials science , chemistry , physics , nanotechnology , electrical resistivity and conductivity , ferromagnetism , conductivity , quantum mechanics , metallurgy , composite material , neuroscience , biology
The mechanism of excitation and propagation of spin waves in Ge: Mn thin films with different nominal manganese concentrations (2, 4, and 8 at % Mn) with percolation magnetic ordering is explored. Concentration dependencies of Curie temperature T _C( n ) and spin wave rigidity D ( n ) are determined, which enables to find the index of correlation distance. An exotic percolation magnetic state of samples of Ge: Mn thin films is confirmed by rectifying experimental dependences D ( n ) and D / T _C( n ) in coordinates accepted in the percolation theory.