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Title: Reentrant spin glass ordering in an Fe-based bulk metallic glass

Abstract

We report the results of the complex susceptibility, temperature, and field dependence of DC magnetization and the nonequilibrium dynamics of a bulk metallic glass Fe{sub 40}Co{sub 8}Cr{sub 15}Mo{sub 14}C{sub 15}B{sub 6}Er{sub 2}. Solid indication of the coexistence of reentrant spin glass (SG) and ferromagnetic orderings is determined from both DC magnetization and AC susceptibility under different DC fields. Dynamics scaling of AC susceptibility indicates critical slowing down to a reentrant SG state with a static transition temperature T{sub s} = ∼17.8 K and a dynamic exponent zv = ∼7.3. The SG nature is further corroborated from chaos and memory effects, magnetic hysteresis, and aging behavior. We discuss the results in terms of the competition among random magnetic anisotropy and exchange interactions and compare them with simulation predictions.

Authors:
;  [1]
  1. School of Materials Science and Engineering, Tongji University, Shanghai 201804 (China)
Publication Date:
OSTI Identifier:
22413041
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORON ADDITIONS; CARBON ADDITIONS; CHAOS THEORY; CHROMIUM ALLOYS; COBALT ALLOYS; ERBIUM ALLOYS; EXCHANGE INTERACTIONS; HYSTERESIS; IRON BASE ALLOYS; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; METALLIC GLASSES; MOLYBDENUM ALLOYS; SPIN GLASS STATE; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE

Citation Formats

Luo, Qiang, and Shen, Jun, E-mail: junshen@tongji.edu.cn. Reentrant spin glass ordering in an Fe-based bulk metallic glass. United States: N. p., 2015. Web. doi:10.1063/1.4907566.
Luo, Qiang, & Shen, Jun, E-mail: junshen@tongji.edu.cn. Reentrant spin glass ordering in an Fe-based bulk metallic glass. United States. doi:10.1063/1.4907566.
Luo, Qiang, and Shen, Jun, E-mail: junshen@tongji.edu.cn. Sat . "Reentrant spin glass ordering in an Fe-based bulk metallic glass". United States. doi:10.1063/1.4907566.
@article{osti_22413041,
title = {Reentrant spin glass ordering in an Fe-based bulk metallic glass},
author = {Luo, Qiang and Shen, Jun, E-mail: junshen@tongji.edu.cn},
abstractNote = {We report the results of the complex susceptibility, temperature, and field dependence of DC magnetization and the nonequilibrium dynamics of a bulk metallic glass Fe{sub 40}Co{sub 8}Cr{sub 15}Mo{sub 14}C{sub 15}B{sub 6}Er{sub 2}. Solid indication of the coexistence of reentrant spin glass (SG) and ferromagnetic orderings is determined from both DC magnetization and AC susceptibility under different DC fields. Dynamics scaling of AC susceptibility indicates critical slowing down to a reentrant SG state with a static transition temperature T{sub s} = ∼17.8 K and a dynamic exponent zv = ∼7.3. The SG nature is further corroborated from chaos and memory effects, magnetic hysteresis, and aging behavior. We discuss the results in terms of the competition among random magnetic anisotropy and exchange interactions and compare them with simulation predictions.},
doi = {10.1063/1.4907566},
journal = {Journal of Applied Physics},
number = 5,
volume = 117,
place = {United States},
year = {Sat Feb 07 00:00:00 EST 2015},
month = {Sat Feb 07 00:00:00 EST 2015}
}