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Title: Structural, electrical, and magnetic properties of Ba{sub 0.9}Ca{sub 0.1}Ti{sub 0.97}Fe{sub 0.03}O{sub 3} and the effect of oxygen vacancies

Detailed experimental studies have been carried out on a new possible dilute magnetic insulator Ba{sub 0.9}Ca{sub 0.1}Ti{sub 0.97}Fe{sub 0.03}O{sub 3−δ} and its oxygen deficient counterpart. Both the samples stabilize in overall tetragonal BaTiO{sub 3} structure at room temperature as indicated by x-ray diffraction and do exhibit room temperature magnetic order with obvious dependencies on δ. Apart from this, the as-grown sample also retains ferroelectricity at room temperature, which could potentially open up a possibility of achieving multifunctionality at room temperature. However, even though the magnetism is positively influenced by oxygen vacancies, the microscopic phase and ferroelectricity get adversely affected. Finally, using local structural probes, existence of diffused phases has been found, which successfully explains all the observed physical properties.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [4]
  1. Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
  2. Dipartimento di Scienze, Universitá Roma Tre, Via della Vasca Navale, 84 I-00146 Roma (Italy)
  3. Elettra-Sincrotrone Trieste S.C.p.A., s.s. 14, km 163.5 34149 Basovizza, Trieste (Italy)
  4. (India)
Publication Date:
OSTI Identifier:
22266144
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 114; Journal Issue: 22; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MAGNETIC PROPERTIES; MAGNETISM; OXYGEN; TITANATES; VACANCIES; X-RAY DIFFRACTION