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Title:
METHOD FOR MEASURING MAGNETIC HOMOGENEITY OF MAGNETIC ULTRA-THIN FILM AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/015229
Kind Code:
A1
Abstract:
A method for measuring magnetic homogeneity of a magnetic ultra-thin film and an application thereof. The method comprises: step S1, providing a magnetic ultra-thin film sample, and acquiring a ferromagnetic resonance spectrum of the magnetic ultra-thin film sample by using a ferromagnetic resonance method; step S2, establishing a first relation curve for the change in full width half maximum of the magnetic ultra-thin film sample as a function of microwave frequency according to the ferromagnetic resonance spectrum; and step S3, linearly fitting the first relation curve, and characterizing the homogeneity of the magnetic ultra-thin film sample by using the fitting result. With the described method, it is possible to acquire homogeneity information of magnetic ultrathin film samples by merely measuring a few frequencies by means of a ferromagnetic resonance method, thereby effectively increasing measurement efficiency and shortening the measurement time.

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Inventors:
HE SHIKUN (CN)
Application Number:
PCT/CN2017/115201
Publication Date:
January 24, 2019
Filing Date:
December 08, 2017
Export Citation:
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Assignee:
CETHIK GROUP CO LTD (CN)
International Classes:
G01N24/00
Foreign References:
CN106872917A2017-06-20
CN1790005A2006-06-21
JPS57179733A1982-11-05
Other References:
OKADA, A. ET AL.: "Magnetization Dynamics and Its Scattering Mechanism in Thin CoFeB Films with Interfacial Anisotropy", PNAS, vol. 114, no. 15, 11 April 2017 (2017-04-11), pages 3815 - 3816, XP055568732
ARIAS, R. ET AL.: "Extrinsic Contributions to the Ferromagnetic Resonance Response of Ultrathin Films", PHYSICAL REVIEW B., vol. 60, no. 10, 31 December 1999 (1999-12-31), pages 7395 - 7409, XP055568737
ZHOU, JING ET AL.: "Effects of Field Annealing on Gilbert Damping of Polycrystalline CoFe Thin Films", JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 441, 26 May 2017 (2017-05-26), pages 264 - 270, XP085131814
Attorney, Agent or Firm:
KANGXIN PARTNERS, P. C. (CN)
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