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Title: Swift heavy ion irradiation induced magnetism in magnetically frustrated BiMn{sub 2}O{sub 5} thin films

Abstract

The swift heavy ion (SHI) irradiation induces weak ferrimagnetism (FM) in magnetically frustrated polycrystalline BiMn{sub 2}O{sub 5} thin films. This is manifested from irradiation induced higher energetic configuration that accounts for evolution of the Mn{sup 2+} state in the Mn{sup 3+}/Mn{sup 4+} network. Basically, this is the root of large magnetic moment in the irradiated samples. X-ray diffraction and Raman-scattering data of the samples indicate considerable modifications in the crystal structure after the SHI irradiation. FM in the irradiated samples and magnetically frustrated behavior of the pristine sample is apparent from dc magnetization measurements. Element specific characterizations such as near-edge x-ray absorption fine structure spectroscopy at O K and Mn L{sub 3,2} edges along with x-ray magnetic circular dichroism at Mn L{sub 3,2} edge show the evolution of the Mn{sup 2+} at disbursement of the Mn{sup 4+}. The microscopic origin behind the induced weak FM is found to be the increased orbital moment in the irradiated thin films.

Authors:
;  [1];  [2];  [3]; ;  [4]; ;  [5]
  1. Department of Physics, Aligarh Muslim University, Aligarh 202002 (India)
  2. Centre for Materials Science and Engineering, National Institute of Technology, Hamirpur 177005 (India)
  3. UGC-DAE Consortium for Scientific Research, Indore 452001 (India)
  4. European Synchrotron Radiation Facility, BP 220, 38043 Grenoble Cedex (France)
  5. Instituto de Fisica Gleb Wataghin, Universidade Estadual de Campinas (UNICAMP), Campinas 13.083-970, SP (Brazil)
Publication Date:
OSTI Identifier:
21502871
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 82; Journal Issue: 17; Other Information: DOI: 10.1103/PhysRevB.82.174432; (c) 2010 The American Physical Society; Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; BISMUTH COMPOUNDS; CONFIGURATION; CRYSTAL STRUCTURE; FERRIMAGNETISM; FINE STRUCTURE; HEAVY IONS; MAGNETIC CIRCULAR DICHROISM; MAGNETIC MOMENTS; MAGNETIZATION; MANGANATES; MANGANESE IONS; PHYSICAL RADIATION EFFECTS; POLYCRYSTALS; RAMAN EFFECT; THIN FILMS; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY; CHARGED PARTICLES; COHERENT SCATTERING; CRYSTALS; DICHROISM; DIFFRACTION; FILMS; IONS; MAGNETISM; MANGANESE COMPOUNDS; OXYGEN COMPOUNDS; RADIATION EFFECTS; SCATTERING; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS

Citation Formats

Shukla, D K, Mollah, S, Kumar, Ravi, Choudhary, R J, Thakur, P, Brookes, N B, Sharma, S K, and Knobel, M. Swift heavy ion irradiation induced magnetism in magnetically frustrated BiMn{sub 2}O{sub 5} thin films. United States: N. p., 2010. Web. doi:10.1103/PHYSREVB.82.174432.
Shukla, D K, Mollah, S, Kumar, Ravi, Choudhary, R J, Thakur, P, Brookes, N B, Sharma, S K, & Knobel, M. Swift heavy ion irradiation induced magnetism in magnetically frustrated BiMn{sub 2}O{sub 5} thin films. United States. https://doi.org/10.1103/PHYSREVB.82.174432
Shukla, D K, Mollah, S, Kumar, Ravi, Choudhary, R J, Thakur, P, Brookes, N B, Sharma, S K, and Knobel, M. 2010. "Swift heavy ion irradiation induced magnetism in magnetically frustrated BiMn{sub 2}O{sub 5} thin films". United States. https://doi.org/10.1103/PHYSREVB.82.174432.
@article{osti_21502871,
title = {Swift heavy ion irradiation induced magnetism in magnetically frustrated BiMn{sub 2}O{sub 5} thin films},
author = {Shukla, D K and Mollah, S and Kumar, Ravi and Choudhary, R J and Thakur, P and Brookes, N B and Sharma, S K and Knobel, M},
abstractNote = {The swift heavy ion (SHI) irradiation induces weak ferrimagnetism (FM) in magnetically frustrated polycrystalline BiMn{sub 2}O{sub 5} thin films. This is manifested from irradiation induced higher energetic configuration that accounts for evolution of the Mn{sup 2+} state in the Mn{sup 3+}/Mn{sup 4+} network. Basically, this is the root of large magnetic moment in the irradiated samples. X-ray diffraction and Raman-scattering data of the samples indicate considerable modifications in the crystal structure after the SHI irradiation. FM in the irradiated samples and magnetically frustrated behavior of the pristine sample is apparent from dc magnetization measurements. Element specific characterizations such as near-edge x-ray absorption fine structure spectroscopy at O K and Mn L{sub 3,2} edges along with x-ray magnetic circular dichroism at Mn L{sub 3,2} edge show the evolution of the Mn{sup 2+} at disbursement of the Mn{sup 4+}. The microscopic origin behind the induced weak FM is found to be the increased orbital moment in the irradiated thin films.},
doi = {10.1103/PHYSREVB.82.174432},
url = {https://www.osti.gov/biblio/21502871}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 17,
volume = 82,
place = {United States},
year = {Mon Nov 01 00:00:00 EDT 2010},
month = {Mon Nov 01 00:00:00 EDT 2010}
}