Open AccessНизкотемпературная аномалия диэлектрических свойств наночастиц магнетита
Author(s) -
П.Ю. Ванина,
Е.Ю. Королева,
А.А. Набережнов
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.17.51378.18823
Subject(s) - materials science , dielectric , atmospheric temperature range , magnetite , hysteresis , anomaly (physics) , borosilicate glass , condensed matter physics , range (aeronautics) , nanoparticle , dielectric response , nuclear magnetic resonance , thermodynamics , composite material , nanotechnology , metallurgy , optoelectronics , physics
This paper is devoted to study the dielectric response of magnetic alkali borosilicate glasses containing single-domain magnetite nanoparticles in the temperature range 5 - 100 K on heating and on cooling in magnetic fields from 0 to 14 T in the frequency range from 1 Hz to 160 kHz. It is shown, that an anomaly in the dielectric response is observed in the temperature range 15 - 50 K for single-domain magnetite nanoparticles. The position of this peculiarity is in good agreement with the transition to the relaxor state observed in the bulk material. The temperature hysteresis of this anomaly has been observed on heating and cooling, and it decreases with decreasing measurement frequency.