Back to Search Start Over

Dynamics of weak magnetic coupling by x-ray ferromagnetic resonance.

Authors :
Kim, Changsoo
Choi, Won-Chang
Moon, Kyoung-Woong
Kim, Hyun-Joong
An, Kyongmo
Park, Byeong-Gyu
Kim, Ho-young
Hong, Jung-il
Kim, Jaeyoung
Qiu, Zi Q.
Kim, Younghak
Hwang, Chanyong
Source :
Journal of Applied Physics. May2023, Vol. 133 Issue 17, p1-8. 8p.
Publication Year :
2023

Abstract

We investigate the interaction between two magnetic layers separated with a normal metal insertion layer (Ti, Pt, and Ru) using x-ray ferromagnetic resonance (XFMR). We measure the amplitude and phase of the ferromagnetic resonance of both layers. Our results indicate that a ferromagnetic exchange coupling between two layers is a dominant coupling mechanism for a thick insertion metal layer. Based on the exchange coupling model, we extract the smallest value of the indirect exchange coefficient of 1.2 μJ/m2, which corresponds to an exchange field of about 0.36 mT. While this value is difficult to measure with other experimental tools, we were able to measure the small value because XFMR detects a resonance phenomenon of a thin layer generated by an oscillating indirect exchange and the Oersted fields with a phase and layer resolved observation. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00218979
Volume :
133
Issue :
17
Database :
Academic Search Index
Journal :
Journal of Applied Physics
Publication Type :
Academic Journal
Accession number :
163561886
Full Text :
https://doi.org/10.1063/5.0141994