Publication detail

Altering magnetic and optical features of rare earth orthoferrite LuFeO3 ceramics via substitution of Ir into Fe sites

POLAT, Ö.

Original Title

Altering magnetic and optical features of rare earth orthoferrite LuFeO3 ceramics via substitution of Ir into Fe sites

Type

journal article in Web of Science

Language

English

Original Abstract

LuFeO3 and LuFe1-xIrxO3 ceramics with x = 0.05 and 0.10 have been obtained by solid-state reaction process. Scanning electron microscope (SEM) analyses have revealed the existence of both particle agglomeration and porosity of nature of the studied samples. The X-ray photoelectron spectroscopy (XPS) investigations have revealed that while Lu has 3+, Fe has mix valence states, 2+ and 3+. On the other hand, the Ir dopant has metallic and 4valence states in the study samples. The Raman investigations unveiled i) the Raman peak intensity reduces with Ir doping until similar to 600 cm(-1), ii) the peaks appearing between 200 cm(-1) and 600 cm(-1) wavenumbers shift toward the smaller values. Magnetic measurements, conducted by vibrating sample magnetometer (VSM), have shown the spin re-orientation (SR) transition temperature around 47 K for all the investigated samples. Furthermore, it is noticed the 5 mol % Ir doped sample has higher magnetization than other samples owing to existence of magnetic impurities such as Lu3Fe5O12. M - H loops have unveiled that Ir doping advances both Hc and Mr values compared to the undoped LFO sample. This increase in both Hc and Mr values could be due to 1) the variation of the canted angels of Fe3+ moments, 2) the advancement of energy of magnetocrystalline anisotropy, and 3) formation of secondary phases such as Lu3Fe5O12 and Fe3O4. Furthermore, the optical band gap examinations have revealed that the band gap of LFO reduces from 2.19 eV to 2.

Keywords

Solid state reaction; LuFeO3; Raman spectroscopy; Magnetic properties; Optical band gap

Authors

POLAT, Ö.

Released

1. 1. 2022

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE

Location

SAN DIEGO

ISBN

1095-726X

Periodical

Journal of Solid State Chemistry

Year of study

305

Number

1

State

United States of America

Pages from

122701

Pages to

122701

Pages count

8

URL

https://doi.org/10.1016/j.jssc.2021.122701

BibTex

@article{BUT176618,
  author="Özgür {Polat}",
  title="Altering magnetic and optical features of rare earth orthoferrite LuFeO3 ceramics via substitution of Ir into Fe sites",
  journal="Journal of Solid State Chemistry",
  year="2022",
  volume="305",
  number="1",
  pages="122701--122701",
  doi="10.1016/j.jssc.2021.122701",
  issn="1095-726X",
  url="https://doi.org/10.1016/j.jssc.2021.122701"
}