Work

Control of magnetization in spinel-type Fe3O4 thin films by N2 ion implantation

Year: 2014

Type: article

Abstract: The magnetism of a typical spinel ferromagnetic oxide, Fe3O4, was controlled via ion implantation. Nitrogen ions were accelerated at 6–10 kV and irradiated to the 13-nm-thick Fe3O4 thin films with dosages of 2 × 1016 to 6 × 1016 ions/cm2. The magnetization decreased with the increase in ion dosage, and there was almost no magnetization when 6 × 1016 ions/cm2 of nitrogen was irradiated, irrespective of the acceleration voltages. The results of the temperature dependence of the magnetization and the Mössbauer study suggest that the transition from ferromagnetic to nonmagnetic phases in the Fe3O4 thin film upon N2 ion irradiation proceeds abruptly without the formation of intermediate states.

Source: Japanese Journal of Applied Physics

DOI: 10.7567/jjap.53.020306

Authors: Eiji Kita, Kazunaga Ono, Noboru Yamaguchi, Tsutomu Nishihashi, Makoto Iura, Jumpei Morishita, Yuji Utsumi, Ko Mibu, Tomohiko Niizeki, Kazuya Z. Suzuki, Hideto Yanagihara

Institutions: University of Tsukuba, Ulvac (Japan), Nagoya Institute of Technology

Language: English

Topic: Magnetic properties of thin films

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Ministry of Education, Culture, Sports, Science and Technology, University of Tsukuba, National Institute for Materials Science

OpenAlex ID: W2076340262

FWCI: 1.124

Cites: 13

Cited by: 12

Related to: 10