# Variation of T$\_g$ with magnetic field in a magnetic glass

Source: [Variation of T$\_g$ with magnetic field in a magnetic glass](<https://www.sota2.com/research/paper/68fa23822c2a376019398aac>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-28T13:52:32.865Z

Authors: Archana Lakhani, Pallavi Kushwaha, R. Rawat, Kranti Kumar, A. Banerjee, P. Chaddah

Published: 2009-04-17T06:31:02.000Z

## Abstract

Glass-like arrest has recently been reported in various magnetic materials. As in structural glasses, the kinetics of a first-order transformation is arrested while retaining the higher-entropy phase as a non-ergodic state. We show visual mesoscopic evidence of the irreversible devitrification of the arrested antiferromagnetic-insulating phase in $Pr\_{0.5}Ca\_{0.5}Mn\_{0.975}Al\_{0.025}O\_3$ to its equilibrium ferromagnetic-metallic phase with isothermal increase of magnetic field, similar to its iso-field devitrification on warming. The slope of $T\_g$ vs magnetic field in half-doped manganites is shown to have a sign governed by Le Chatelier's Principle.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/0904.2635>)

[PDF](<https://arxiv.org/pdf/0904.2635.pdf>)