Open AccessМагнитная восприимчивость нанокомпозитных редкоземельных титанатов в переменных полях
Author(s) -
А.Б. Ринкевич,
Д.В. Перов
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.12.50210.350
Subject(s) - nanocomposite , materials science , frequency dependence , low frequency , range (aeronautics) , condensed matter physics , relaxation (psychology) , debye , magnetic susceptibility , computational physics , nuclear magnetic resonance , physics , composite material , psychology , social psychology , astronomy
Experimental investigation of magnetic susceptibility of nanocomposite rare earth titanates at low temperatures is carried out in frequency range from 1 Hz to 10 kHz. Nanocomposites based on opal matrices are the objects under study which inter-spherical voids are filled with Gd2Ti2O7, Yb2Ti2O7, Dy2Ti2O7 и Dy2Si2O7 particles sized up to 60 nm. The frequency dependences of AC susceptibility are measured at temperatures from 2 to 20K. At frequencies above 1 kHz the frequency dependence fairly good corresponds to a relaxing oscillator model and can be approximated by Debye formula for all nanocomposites. For frequencies from 1 Hz to 10 kHz, however, it is necessary to apply a model with two relaxation times.