Publication detail

PROPERTIES OF NANOCRYSTALLINE Fe-Ni PARTICLES PREPARED BY THERMAL REDUCTION OF OXALATE PRECURSORS

ŠVÁBENSKÁ, E. ROUPCOVÁ, P. HAVLÍČEK, L. SCHNEEWEISS, O.

Original Title

PROPERTIES OF NANOCRYSTALLINE Fe-Ni PARTICLES PREPARED BY THERMAL REDUCTION OF OXALATE PRECURSORS

Type

conference paper

Language

English

Original Abstract

Recent technological advancements require development of cost-effective and high-performance magnets which ideally do not contain rare earth metals or noble metals. The promising candidates are Fe-Ni-based alloys, in particular, the Fe50Ni50 L1(0) phase (tetrataenite), which has a great perspective for producing hard magnetic materials. Our study explores a promising method for preparing nanoparticles of Fe-Ni alloy from an iron-nickel oxalate precursor. The coprecipitation method was employed to prepare oxalate precursors, followed by controlled thermal decomposition in a reducing hydrogen atmosphere. The morphology and properties of the resulting particles were analysed using scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Mossbauer spectroscopy (MS), and magnetic measurements. The SEM analysis revealed that the particles have approximately cube-shaped unit cell morphology with a size in a range of 1 - 2 mu m. Upon annealing, the samples contain multiple phases with varying Fe-Ni content. Magnetic measurements confirmed the formation of magnetically suitable Fe-Ni phases in the samples after annealing. Mossbauer spectroscopy emerged as a highly effective method for characterizing individual phases of the Fe-Ni system.

Keywords

Magnetic materials; thermal decomposition; Mossbauer spectroscopy

Authors

ŠVÁBENSKÁ, E.; ROUPCOVÁ, P.; HAVLÍČEK, L.; SCHNEEWEISS, O.

Released

1. 1. 2024

Publisher

TANGER LTD

Location

SLEZSKA

ISBN

978-80-883-6515-0

Book

NANOCON Conference Proceedings

ISBN

2694-930X

Periodical

Proceedings 12th International Conference on Nanomaterials - Research & Application

State

Czech Republic

Pages from

76

Pages to

81

Pages count

6

URL

https://www.confer.cz/nanocon/2023/4773-properties-of-nanocrystalline-fe-ni-particles-prepared-by-thermal-reduction-of-oxalate-precursors

BibTex

@inproceedings{BUT191220,
  author="Eva {Švábenská} and Pavla {Roupcová} and Lubomír {Havlíček} and Oldřich {Schneeweiss}",
  title="PROPERTIES OF NANOCRYSTALLINE Fe-Ni PARTICLES PREPARED BY THERMAL REDUCTION OF OXALATE PRECURSORS",
  booktitle="NANOCON Conference Proceedings",
  year="2024",
  journal="Proceedings 12th International Conference on Nanomaterials - Research & Application",
  pages="76--81",
  publisher="TANGER LTD",
  address="SLEZSKA",
  doi="10.37904/nanocon.2023.4773",
  isbn="978-80-883-6515-0",
  issn="2694-930X",
  url="https://www.confer.cz/nanocon/2023/4773-properties-of-nanocrystalline-fe-ni-particles-prepared-by-thermal-reduction-of-oxalate-precursors"
}