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Title: Evidence of exchange bias effect originating from the interaction between antiferromagnetic core and spin glass shell

Spin glass behavior and exchange bias effect have been observed in antiferromagnetic SrMn{sub 3}O{sub 6−x} nanoribbons synthesized via a self-sacrificing template process. The magnetic field dependence of thermoremanent magnetization and isothermal remanent magnetization shows that the sample is good correspondence to spin glass and diluted antiferromagnetic system for the applied field H < 2 T and H > 2 T, respectively. By detailed analysis of training effect using Binek's model, we argue that the observed exchange bias effect in SrMn{sub 3}O{sub 6−x} nanoribbons arises entirely from an interface exchange coupling between the antiferromagnetic core and spin glass shell. The present study is useful for understanding the nature of shell layer and the origin of exchange bias effect in other antiferromagnetic nanosystems as well.
Authors:
; ; ; ;  [1] ; ;  [2]
  1. School of Physics and Electronics, Institute of Optoelectronic Materials and Technology, Gannan Normal University, Ganzhou 341000 (China)
  2. Nanjing National Laboratory of Microstructures, College of Physics, Nanjing University, Nanjing 210093 (China)
Publication Date:
OSTI Identifier:
22308970
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 2; Other Information: (c) 2014 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; ANTIFERROMAGNETISM; COUPLING; INTERACTIONS; INTERFACES; MAGNETIC FIELDS; MAGNETIZATION; MANGANATES; NANOSTRUCTURES; SPIN GLASS STATE; STRONTIUM COMPOUNDS