MBE growth and abnormal magnetic behaviors of epitaxial Fe100−xGax on SrTiO3

Here, we present the magnetic behaviors of disordered bcc α-Fe phase Fe100−xGax (x = 10, 20, and 30) thin films grown on a SrTiO3 substrate using molecular beam epitaxy. With the Ga content increasing from 10% to 30%, the saturation magnetization decreased from 1575 to 991 emu/cm3 while the coercivi...

Full description

Saved in:
Bibliographic Details
Published in:AIP advances 2023-03, Vol.13 (3), p.035334-035334-6
Main Authors: Tran, Thi Toan, Vu, Thi Hoa, Pham, Anh Tuan, Nguyen, Thi Huong, Nguyen, Van Quang, Hwang, Chanyong, Cho, Sunglae
Format: Article
Language:English
Subjects:
Alpha iron
Coercivity
Epitaxial growth
Gallium
Hysteresis loops
Magnetic domains
Magnetic saturation
Molecular beam epitaxy
Strontium titanates
Substrates
Thin films
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Here, we present the magnetic behaviors of disordered bcc α-Fe phase Fe100−xGax (x = 10, 20, and 30) thin films grown on a SrTiO3 substrate using molecular beam epitaxy. With the Ga content increasing from 10% to 30%, the saturation magnetization decreased from 1575 to 991 emu/cm3 while the coercivity increased from 23 to 197 Oe. A two-step-hysteresis loop was observed in all films. Specifically, the hysteresis loop of the film with 10% Ga concentration reveals an obvious kink. Magneto-optical Kerr images confirmed the abnormal magnetic domain switching in the films, which is due to the appearance of perpendicular domains under external magnetic field.
ISSN:2158-3226
2158-3226
DOI:10.1063/5.0136344