eprintid: 4500
rev_number: 12
eprint_status: archive
userid: 438
dir: disk0/00/00/45/00
datestamp: 2021-06-21 07:06:26
lastmod: 2021-06-21 07:06:26
status_changed: 2021-06-21 07:06:26
type: article
metadata_visibility: show
creators_name: Nguyen, Thi Minh Hong
creators_name: Nguyen, Dang Co
creators_name: Ho, Thi Anh
creators_name: Bui, Dinh Tu
creators_id: hongntm@vnu.edu.vn
creators_id: cond@vnu.edu.vn
creators_id: anhht@vnu.edu.vn
creators_id: buidinhtu@vnu.edu.vn
title: Structural evolution and magnetic properties of Bi0.86Nd0.14Fe1-xTixO3 ceramics
ispublished: pub
subjects: Phys
subjects: isi
divisions: fac_physic
abstract: Ceramic Bi0.86Nd0.14Fe1-xTixO3 (0.02 ≤ x ≤ 0.1) compounds were prepared to study the structural evolution, microstructure, and magnetic properties. The structural analysis by X-ray diffraction and Rietveld refinement revealed a coexistence of the polar rhombohedral (R3c symmetry) and antipolar orthorhombic (Pbam symmetry)
structures over the entire composition range, while Raman scattering spectroscopy detected not only the phonon
vibrations of the R3c and Pbam but also the Pbnm symmetries. The microstructure investigation showed the small
and large grain size regions corresponding to the R3c and Pbam/Pbnm phases, respectively. The dependence of
magnetization on the Ti concentration suggested that the weak ferromagnetism observed in the compounds arised from the intrinsic collapse of cycloidal order rather than defect-induced magnetism. The magnetic aging observed at room temperature was explained on the basic of phase switching and spin frustration at the phase boundary. The influence of phase switching induced by an external electric field on the magnetic properties was also studied to reveal the contribution of phase boundary spins to the net magnetization.
date: 2021-06-19
date_type: published
publisher: Elsevier B.V
official_url: https://www.sciencedirect.com/science/article/abs/pii/S0254058421006404?via%3Dihub
id_number: 10.1016/j.matchemphys.2021.124857
full_text_status: public
publication: Materials Chemistry and Physics
number: 124857
refereed: FALSE
issn: 0254-0584
related_url_url: https://doi.org/10.1016/j.matchemphys.2021.124857
funders: Thai Nguyen University of Technology (Grant No T2020-B19).
citation:   Nguyen, Thi Minh Hong and Nguyen, Dang Co and Ho, Thi Anh and Bui, Dinh Tu  (2021) Structural evolution and magnetic properties of Bi0.86Nd0.14Fe1-xTixO3 ceramics.  Materials Chemistry and Physics  (124857).    ISSN 0254-0584     
document_url: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/4500/1/j.matchemphys.2021.124857.pdf