Observation of room-temperature ferromagnetism in Co-doped Bi0.5K0.5TiO3 materials

We report the band gap modification and strong room ferromagnetism by substituting the Co ions for the Ti site of Bi 0.5 K 0.5 TiO 3 materials. The predicted band gap of 2.11 eV and magnetic moment of 2.7 μ B /Co are reproduced precisely in UV–Vis spectroscopy and superconducting quantum interferenc...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2017-08, Vol.123 (8), p.1-4, Article 563
Main Authors: Cuong, Le Viet, Tuan, Nguyen Hoang, Odkhuu, Dorj, Van Thiet, Duong, Dung, Nguyen Huu, Bac, Luong Huu, Dung, Dang Duc
Format: Article
Language:English
Subjects:
Applied physics
Band gap
Characterization and Evaluation of Materials
Condensed Matter Physics
Ferromagnetism
Machines
Magnetic moments
Manufacturing
Materials science
Multiferroic materials
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Rapid Communication
Room temperature
Superconductivity
Surfaces and Interfaces
Thin Films
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report the band gap modification and strong room ferromagnetism by substituting the Co ions for the Ti site of Bi 0.5 K 0.5 TiO 3 materials. The predicted band gap of 2.11 eV and magnetic moment of 2.7 μ B /Co are reproduced precisely in UV–Vis spectroscopy and superconducting quantum interference device experiments, respectively. We elucidate the driving mechanisms for these results in terms of the spin-exchange splitting between spin subbands in the presence of substitution ions and high-spin crystal field energy spectrum. This method would provide a promising approach to get single-phase multiferroics and resolve the problem of the scarcity of single-phase multiferroics in nature.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-017-1173-1