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Titolo:
MAGNETIC AND STRUCTURAL-PROPERTIES OF FE-FEO BILAYERS
Autore:
LIN X; MURTHY AS; HADJIPANAYIS GC; SWANN C; SHAH SI;
Indirizzi:
UNIV DELAWARE,DEPT PHYS & ASTRON NEWARK DE 19716 UNIV DELAWARE,BARTOL RES INST NEWARK DE 19716 DUPONT EXPTL STN WILMINGTON DE 19808
Titolo Testata:
Journal of applied physics
fascicolo: 10, volume: 76, anno: 1994,
parte:, 2
pagine: 6543 - 6545
SICI:
0021-8979(1994)76:10<6543:MASOFB>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
OXIDE LAYER; FILMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
X. Lin et al., "MAGNETIC AND STRUCTURAL-PROPERTIES OF FE-FEO BILAYERS", Journal of applied physics, 76(10), 1994, pp. 6543-6545

Abstract

The structural and magnetic properties of sputtered Fe/Fe-O films were studied by x-ray photoelectron spectroscopy (XPS), Rutherford backscattering spectroscopy, transmission electron microscopy, and superconducting quantum interference device. XPS studies showed the presence ofFeO and Fe2O3 on the surface of as-made samples. Microstructure studies showed a uniform nanostructure with the grain size in the range of 50-150 Angstrom with smaller grains corresponding to thinner films. The coercivity at 10 K was found to increase substantially with decreasing film thickness below 60 Angstrom. A high H-c (2.7 kOe) was observedin samples with a thickness about 20 Angstrom. Magnetization curves showed a planar anisotropy with a shifted hysteresis loop characteristic of an exchange anisotropy between the Fe and Fe-O coating. The coercivity was found to drop steeply with increasing temperature. This may be attributed to the superparamagnetic behavior of the Fe-O surface layer.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 06:25:01