Detail publikace

Round robin comparison on quantitative nanometer scale magnetic field measurements by magnetic force microscopy

HU, X. PUTTOCK, R. KAZAKOVA, O. ULVR, M. KLAPETEK, P. NEČAS, D. NEU, V.

Originální název

Round robin comparison on quantitative nanometer scale magnetic field measurements by magnetic force microscopy

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Magnetic force microscopy (MFM) can be considered as a standard tool for nano-scale investigation of magnetic domain structures by probing the local stray magnetic field landscape of the measured sample. However, this generally provides only qualitative data. To quantify the stray magnetic fields, the MFM system must be calibrated. To that end, a transfer function (TF) approach was proposed, that, unlike point probe models, fully considers the finite extent of the MFM tip. However, albeit being comprehensive, the TF approach is not yet well established, mainly due to the ambiguities concerning the input parameters and the measurement procedure. Additionally, the calibration process represents an ill-posed problem which requires a regularization that introduces further parameters. In this paper we propose a guideline for quantitative stray field measurements by standard MFM tools in ambient conditions. All steps of the measurement and calibration procedure are detailed, including reference sample and sample under test (SUT) measurements and the data analysis. The suitability of the reference sample used in the present work for calibrated measurements on a sub-micron scale is discussed. A specific regularization approach based on a Pseudo-Wiener Filter is applied and combined with criteria for the numerical determination of a unique regularization parameter. To demonstrate the robustness of such a defined approach, a round robin comparison of magnetic field measurements was conducted by four laboratories. The guideline, the reference sample and the results of the round robin are discussed.

Klíčová slova

Comparison; Quantitative magnetic force microscopy; Magnetic probe calibration; Reference sample; Stray magnetic field

Autoři

HU, X.; PUTTOCK, R.; KAZAKOVA, O.; ULVR, M.; KLAPETEK, P.; NEČAS, D.; NEU, V.

Vydáno

1. 10. 2020

Nakladatel

ELSEVIER

Místo

AMSTERDAM

ISSN

1873-4766

Periodikum

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

Ročník

511

Číslo

1

Stát

Nizozemsko

Strany od

166947-1

Strany do

166947-11

Strany počet

11

URL