Enhanced room-temperature ferromagnetism in superconducting pr2-xcexcuo4 nanoparticles

Malik Anjelh Baqiya, Putu Eka Dharma Putra, Resky Irfanita, Suasmoro, Darminto, Takayuki Kawamata, Takashi Noji, Hidetaka Sato, Masatsune Kato, Yoji Koike

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Recently, the so-called room-temperature ferromagnetism in any nanoparticles has been studied intensively. It is well known that the properties of ferromagnetism and superconductivity are contradictory in a superconducting high-Tc cuprate. The existence of ferromagnetism in the nanoparticles has been suggested to occur on the surface. This magnetism has been expected to come from defects inducing magnetic moments on oxygen vacancies at the surface of the nanoparticles. This work is to observe magnetism in nanosized superconducting Pr2-xCexCuO4 (PCCO) with x = 0.15 by means of a superconducting quantum interference device (SQUID). The magnetization curves of the reduced PCCO nanoparticles with the superconducting transition temperature, Tc, of ~25 K have revealed that there is weak ferromagnetism observed at room temperature. The magnitude of magnetization could be enhanced by oxygen reduction annealing in vacuum with increasing annealing temperature. A non-linear magnetization occurring in the reduced PCCO nanoparticles through the vacuum annealing process is probably due to a strong oxygen reduction producing more oxygen vacancies in the T'-structure.

Original languageEnglish
Title of host publicationFunctional Properties of Modern Materials II
Editors Darminto, Budhy Kurniawan, Risdiana, Isao Watanabe, Agustinus Agung Nugroho
PublisherTrans Tech Publications Ltd
Pages263-268
Number of pages6
ISBN (Print)9783035714968
DOIs
Publication statusPublished - 2019
Event4th International Conference on Functional Materials Science, ICFMS 2018 - Bali, Indonesia
Duration: 2018 Nov 132018 Nov 15

Publication series

NameMaterials Science Forum
Volume966 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference4th International Conference on Functional Materials Science, ICFMS 2018
CountryIndonesia
CityBali
Period18/11/1318/11/15

Keywords

  • Magnetic properties
  • Nanocrystals
  • Oxygen vacancy
  • PrCeCuO
  • Weak Ferromagnetism

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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