IFIS - LITORAL   24734
INSTITUTO DE FISICA DEL LITORAL
Unidad Ejecutora - UE
artículos
Título:
Experimental artifacts in MOKE measurements when using paramagnetic sampleholders
Autor/es:
BONETTO, FERNANDO; MUNOZ-NOVAL, ALVARO; GARCIA, MIGUEL ANGEL; BONIN, CLAUDIO JULIO
Revista:
MEASUREMENT SCIENCE & TECHNOLOGY (PRINT)
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2020
ISSN:
0957-0233
Resumen:
We describe here an artifact that may affect to magneto-optical Kerr measurements. When paramagnetic sample holders (s.h.) with non-negligible susceptibilities are used, the inhomogeneity of the applied magnetic field can induce forces and torques on it, shifting the reflected beam, and altering its intensity at the photodetector. The effect is even and can be avoided using low susceptibility paramagnetic or diamagnetic s.h. We also present a detailed analytical description of the magnetic forces involved and provide some estimated values of the s.h. shifting, showing that they might distort the MOKE signal. Moreover, in this paper we show how the artifact can be removed from the experimental curves with an appropriated data analysis.