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Title: Exchange bias in zinc ferrite-FeNiMoB based metallic glass composite thin films

The Exchange bias phenomenon and methods to manipulate the bias field in a controlled manner are thrust areas in magnetism due to its sophisticated theoretical concepts as well as advanced technological utility in the field of spintronics. The Exchange bias effect is observed as a result of ferromagnetic-antiferromagnetic (FM-AFM) exchange interaction, usually observed as a loop shift on field cooling below the Neel temperature of AFM. In the present study, we have chosen zinc ferrite which is a well known antiferromagnet, and FeNiMoB based metallic glass as the ferromagnet. The films were prepared by RF sputtering technique. The thickness and composition was obtained by RBS. The magnetic studies using SQUID VSM indicate exchange bias effect in the system. The effect of thermal annealing on exchange bias effect was studied. The observed exchange bias in the zinc ferrite-FeNiMoB system is not due to FM-AFM coupling but due to spin glass-ferromagnetic interaction.
Authors:
; ; ;  [1] ;  [2] ; ;  [3] ;  [4]
  1. Cochin University of Science and Technology, Cochin-682022 (India)
  2. Christian College, Chengannur, Kerala-689121 (India)
  3. Inter University Accelerator Centre, Vasant Kunj, New Delhi-110067 (India)
  4. School of Materials Science and Engineering, Nanyang Technological University (Singapore)
Publication Date:
OSTI Identifier:
22490580
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; 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; ANNEALING; ANTIFERROMAGNETISM; ATOMIC FORCE MICROSCOPY; EXCHANGE INTERACTIONS; FERRITES; FERROMAGNETIC MATERIALS; FERROMAGNETISM; IRON COMPOUNDS; METALLIC GLASSES; MOLYBDENUM BORIDES; NEEL TEMPERATURE; NICKEL COMPOUNDS; RUTHERFORD BACKSCATTERING SPECTROSCOPY; SPIN GLASS STATE; SPUTTERING; SQUID DEVICES; THIN FILMS; VIBRATING SAMPLE MAGNETOMETERS