Designing tunable band-gap and magnetization at room-temperature in Pb(Ti^sub 1-x^M^sub x^)O^sub 3-d^ (M=Ni and Pd) thin films

The Pb(Ti1-xMx)O3-δ (M=Ni and Pd) ferroelectric thin films prepared by a sol-gel technique have been studied by means of structural characterizations, optical and magnetic measurements. X-ray diffraction and Raman scattering results reflect the visible changes in average structure. Moreover, d8 M2+...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2016-12, Vol.185, p.323
Main Authors: Zhou, Wenliang, Deng, Hongmei, Yang, Pingxiong, Chu, Junhao
Format: Article
Language:English
Subjects:
Band structure
Band structure of solids
Diamagnetism
Diffraction
Ferroelectric materials
Ferromagnetism
Magnetic measurement
Materials science
Raman spectra
Room temperature
Sol-gel processes
Studies
Temperature
Thin films
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Pb(Ti1-xMx)O3-δ (M=Ni and Pd) ferroelectric thin films prepared by a sol-gel technique have been studied by means of structural characterizations, optical and magnetic measurements. X-ray diffraction and Raman scattering results reflect the visible changes in average structure. Moreover, d8 M2+ doping has important effects on the energy band structure and magnetic orderings. Optical transmittance spectra analysis indicates that Pb(Ti0.85Ni0.15)O3-δ and Pb(Ti0.85Pd0.15)O3-δ thin films present small band-gaps of 2.67 eV and 2.55 eV, respectively. Also, the as-grown Pb(Ti0.85M0.15)O3-δ thin films show room-temperature ferromagnetism, in contrast to PbTiO3 which is diamagnetic. A bound magnetic polaron model can be employed to explain the observed ferromagnetic behavior.
ISSN:0167-577X
1873-4979