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

Fingerprint

Sputtering
Magnetic properties
Spin glass
Thin films
Aging of materials
Ions
Fused silica
Magnetic moments
Magnetic susceptibility
Rare earths
Oxide films
Iron
Data storage equipment
Temperature
Substrates

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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.

Magnetic properties of amorphous Fe2O3-R 2O3 (R = La, Gd and Tb) thin films fabricated by sputtering method. / Akamatsu, Hirofumi; Murai, Shunsuke; Fujita, Koji; Tanaka, Katsuhisa.

Glass - The Challenge for the 21st Century - 9th ESG Conference with the Annual Meeting of the ICG. Vol. 39-40 Trans Tech Publications, 2008. p. 207-212 (Advanced Materials Research; Vol. 39-40).

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

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, Advanced Materials Research, vol. 39-40, Trans Tech Publications, pp. 207-212, Glass - The Challenge for the 21st Century - 9th ESG Conference with the Annual Meeting of the ICG, Trencin, Slovakia, 6/22/08.
Akamatsu H, Murai S, Fujita K, Tanaka K. 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. Trans Tech Publications. 2008. p. 207-212. (Advanced Materials Research).
Akamatsu, Hirofumi ; Murai, Shunsuke ; Fujita, Koji ; Tanaka, Katsuhisa. / Magnetic properties of amorphous Fe2O3-R 2O3 (R = La, Gd and Tb) thin films fabricated by sputtering method. Glass - The Challenge for the 21st Century - 9th ESG Conference with the Annual Meeting of the ICG. Vol. 39-40 Trans Tech Publications, 2008. pp. 207-212 (Advanced Materials Research).
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