Abstract
Single phase nano-crystalline zinc ferrite (ZnFe2O4) thin films were deposited on fused quartz substrate using the pulsed laser deposition technique. The films were deposited at different substrate temperatures. The field dependence of magnetization at 10 K shows hysteresis loops for all the samples. Temperature dependence of the field cooled (FC) and zero field cooled (ZFC) magnetization indicated irreversible behavior between the FC and ZFC data, and the irreversibility depends on the measuring magnetic field. The thermo-magnetic irreversibility in the magnetization data is correlated with the magnitude of the applied field and the coercivity (HC) obtained from the M-H loops.
Highlights
Zinc ferrite (ZnFe2O4) is a normal spinel ferrite in which Zn2+ occupies the tetrahedral site (A) and Fe3+ occupies the octahedral site (B)
Nanocrystalline ZnFe2O4 exhibits anomalous magnetic behavior like ferrimagnetism, spin glass state, superparamagnetism or cluster glass state.[2,3,4,5,6,7,8]. These properties have been attributed to the deviation of cation redistribution from the normal spinel structure wherein some amount of Zn2+ ions occupy the B site and an equal amount Fe3+ ions are present on A sites
We have studied the magnetic properties of ZnFe2O4 thin films deposited at different TS values using Pulsed Laser Deposition (PLD)
Summary
Zinc ferrite (ZnFe2O4) is a normal spinel ferrite in which Zn2+ occupies the tetrahedral site (A) and Fe3+ occupies the octahedral site (B). A weak superexchange interaction between Fe3+ ions on B sites, which are the only magnetic ions, causes the material to be antiferromagnetic with Neel temperature (TN) of ∼10 K. Nanocrystalline ZnFe2O4 exhibits anomalous magnetic behavior like ferrimagnetism, spin glass state, superparamagnetism or cluster glass state.[2,3,4,5,6,7,8] These properties have been attributed to the deviation of cation redistribution from the normal spinel structure wherein some amount of Zn2+ ions occupy the B site and an equal amount Fe3+ ions are present on A sites. The resulting superexchange interaction between Fe3+ ions at A and B sites contributes to the ferrimagnetism.[2,8,9,10]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
