US 12,442,756 B2
Method and system for determining at least one property of magnetic matter
Justin M. Shaw, Louisville, CO (US); Thomas J. Silva, Boulder, CO (US); Hans Toya Nembach, Boulder, CO (US); and Grant A. Riley, Lafayette, CO (US)
Assigned to The Regents Of The University Of Colorado, Denver, CO (US); The Regents of the University of California, Oakland, CA (US); and Government of the United States of America as represented by the Secretary of Commerce, Gaithersburg, MD (US)
Appl. No. 18/024,708
Filed by THE REGENTS OF THE UNIVERSITY OF COLORADO, Denver, CO (US); The Regents of the University of California, Oakland, CA (US); and Government of the United States of America as represented by the Secretary of Commerce, Gaithersburg, MD (US)
PCT Filed Sep. 4, 2021, PCT No. PCT/US2021/049176
§ 371(c)(1), (2) Date Mar. 3, 2023,
PCT Pub. No. WO2022/051692, PCT Pub. Date Mar. 10, 2022.
Claims priority of provisional application 63/074,665, filed on Sep. 4, 2020.
Prior Publication US 2023/0366809 A1, Nov. 16, 2023
Int. Cl. G01N 21/17 (2006.01); G01N 21/47 (2006.01)
CPC G01N 21/1717 (2013.01) [G01N 21/4738 (2013.01); G01N 2021/1727 (2013.01); G01N 2201/06113 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method, comprising:
applying a magnetic field onto magnetic matter;
directing first light onto the magnetic matter at a first set of incident angles;
receiving a first set of signatures associated with the first light scattered from the magnetic matter;
varying an orientation of the magnetic matter with respect to the magnetic field;
directing second light onto the magnetic matter at a second set of incident angles;
receiving a second set of signatures associated with the second light scattered from the magnetic matter;
mapping the first set of signatures and the second set of signatures to a first set of spin waves and a second set of spin waves, respectively; and
determining at least one property of the magnetic matter by fitting the first set of spin waves and the second set of spin waves to a dispersion relation.