Re-entrant spin glass and magnetoresistance in Co_{0.2}Zn_{0.8}Fe_{1.6}Ti_{0.4}O_4 spinel oxide

TL;DR

This study explores the magnetic phase transitions and spin glass behavior in a specific cobalt-zinc ferrite spinel oxide, revealing complex magnetic responses and magnetoresistance effects.

Contribution

It provides new insights into the static and dynamic magnetic responses and phase transitions in Co_{0.2}Zn_{0.8}Fe_{1.6}Ti_{0.4}O_4 spinel oxide, highlighting re-entrant spin glass phenomena.

Findings

Observation of paramagnetic to ferromagnetic transition at T_C ≤ 270K

Detection of ferromagnetic to canted spin glass transition at T_f ≤ 125K

Identification of re-entrant spin glass behavior in the material

Abstract

We have investigated the static and dynamic response of magnetic clusters in Co_{0.2}Zn_{0.8}Fe_{1.6}Ti_{0.4}O_4 spinel oxide, where a sequence of magnetic phase transitions, i.e., paramagnetic (PM) to ferromagnetic at T_{C} $\leq$ 270K and ferromagnetic to canted spin glass state at T_f$ $\leq$ 125K is observed.