公开(公告)号：US10006884B1

公开(公告)日：2018-06-26

申请号：US14822103

申请日：2015-08-10

Applicant: Seagate Technology LLC

Inventor： Ganping Ju ,  Jason L Presseky ,  Roy W. Chantrell ,  Xiaowei Wu ,  Xi Chen ,  Xiaobin Zhu ,  Yingguo Peng

IPC: G01R33/00 ,  G01N27/80

CPC classification number: G01N27/80 ,  G01K7/00 ,  G03G5/16 ,  G06F17/18 ,  G11B11/10591 ,  G11B2005/0021 ,  H01F41/304 ,  H01L37/00 ,  H01L37/04

Abstract: Determining a Curie temperature (Tc) distribution of a sample comprising magnetic material involves subjecting the sample to an electromagnetic field, heating the sample over a range of temperatures, generating a signal representative of a parameter of the sample that changes as a function of changing sample temperature while the sample is subjected to the electromagnetic field, and determining the Tc distribution of the sample using the generated signal and a multiplicity of predetermined parameters of the sample.