Magnetic properties of amorphous Fe2O3-R 2O3 (R = La, Gd and Tb) thin films fabricated by sputtering method

Hirofumi Akamatsu, Shunsuke Murai, Koji Fujita, Katsuhisa Tanaka

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

6 Citations (Scopus)

Abstract

Amorphous oxide thin films of Fe2O3-R 2O3 (R = La, Gd and Tb) systems have been deposited on silica glass substrates by using a radio frequency sputtering method, and magnetic properties of the thin films have been examined. The Fe 2O3-La2O3 thin films exhibit cusp-like maxima of dc magnetic susceptibility in their temperature dependences as well as magnetic aging and memory effects characteristic of typical spin glasses. For Fe2O3-Gd2O3 and Fe 2O3-Tb2O3 systems, magnetic moments of iron ions take part in formation of a spin glass state, as indicated by the magnetic aging effects, while those of rare-earth ions remain to be in a paramagnetic state even at very low temperatures.

Original languageEnglish
Title of host publicationGlass - The Challenge for the 21st Century - 9th ESG Conference with the Annual Meeting of the ICG
PublisherTrans Tech Publications
Pages207-212
Number of pages6
Volume39-40
ISBN (Print)0878493875, 9780878493876
Publication statusPublished - 2008
Externally publishedYes
EventGlass - The Challenge for the 21st Century - 9th ESG Conference with the Annual Meeting of the ICG - Trencin, Slovakia
Duration: Jun 22 2008Jun 26 2008

Publication series

NameAdvanced Materials Research
Volume39-40
ISSN (Print)10226680

Other

OtherGlass - The Challenge for the 21st Century - 9th ESG Conference with the Annual Meeting of the ICG
CountrySlovakia
CityTrencin
Period6/22/086/26/08

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Akamatsu, H., Murai, S., Fujita, K., & Tanaka, K. (2008). Magnetic properties of amorphous Fe2O3-R 2O3 (R = La, Gd and Tb) thin films fabricated by sputtering method. In Glass - The Challenge for the 21st Century - 9th ESG Conference with the Annual Meeting of the ICG (Vol. 39-40, pp. 207-212). (Advanced Materials Research; Vol. 39-40). Trans Tech Publications.