Publication detail

Variation in the dielectric and magnetic characteristics of multiferroic LuFeO3 as a result of cobalt substitution at Fe sites

POLSAT, O. COSKUN, M. YILDRIM, Y. ROUPCOVA, P. SOBOLA, D. SEN, C. DURMUS, Z. CAGLAR, M. TURUT, A.

Original Title

Variation in the dielectric and magnetic characteristics of multiferroic LuFeO3 as a result of cobalt substitution at Fe sites

Type

journal article in Web of Science

Language

English

Original Abstract

Due to its electrical, magnetic, and optical characteristics, LuFeO3 (LFO) has caught the scientific community's interest. In this study, the powders of LFO, LuFe0.95Co0.05O3, and LuFe0.90Co0.10O3 samples were prepared by using the well-known solid-state approach. The crystalline structure of the fabricated samples was examined by an X-ray diffractometer (XRD). It was found that the samples display secondary phases such as Lu2O3, Lutetium Tetraoxodiferrate, and Wustite. It was shown by scanning electron microscope (SEM) that particle size decreases with Co doping. X-ray photoelectron spectroscopy (XPS) determined oxidation states for Fe and Co. It was presented that Fe has a mixture of 2 + and + 3 valance states in the LFO sample. Although LuFe0.95Co0.05O3 has only the 3 + state, LuFe0.90Co0.10O3 sample has coexisting metallic and 3 + states. The conductivity and dielectric constant of the undoped LFO sample were higher than those of Co doped LFO samples. A decrease in both the dielectric constant and conductivity was associated with a lack of Fe2+ ions and lattice distortions. Furthermore, it was argued that several conduction models must be developed to explain the conduction process in the analyzed samples. Magnetic experiments using a vibrating sample magnetometer (VSM) revealed that Co doping raises Mr values. We discuss that this increase in Mr values could be related to i) variations in the inclined angles of Fe3+ moments and ii) the growth of magnetocrystalline anisotropy's energy.

Keywords

Solid-state reaction; LuFeO3; Co doping; Dielectric properties; Conductivity; Magnetic properties

Authors

POLSAT, O.; COSKUN, M.; YILDRIM, Y.; ROUPCOVA, P.; SOBOLA, D.; SEN, C.; DURMUS, Z.; CAGLAR, M.; TURUT, A.

Released

1. 1. 2024

Publisher

ELSEVIER SCIENCE SA

Location

LAUSANNE

ISBN

0925-8388

Periodical

Journal of Alloys and Compounds

Year of study

963

Number

November 2024

State

Swiss Confederation

Pages from

1

Pages to

14

Pages count

14

URL

https://www.sciencedirect.com/science/article/pii/S0925838823022429

BibTex

@article{BUT184377,
  author="POLSAT, O. and COSKUN, M. and YILDRIM, Y. and ROUPCOVA, P. and SOBOLA, D. and SEN, C. and DURMUS, Z. and CAGLAR, M. and TURUT, A.",
  title="Variation in the dielectric and magnetic characteristics of multiferroic LuFeO3 as a result of cobalt substitution at Fe sites",
  journal="Journal of Alloys and Compounds",
  year="2024",
  volume="963",
  number="November 2024",
  pages="1--14",
  doi="10.1016/j.jallcom.2023.170939",
  issn="0925-8388",
  url="https://www.sciencedirect.com/science/article/pii/S0925838823022429"
}