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Title: Radio-frequency measurements of UNiX compounds (X= Al, Ga, Ge) in high magnetic fields

Journal Article · · Journal of Magnetism and Magnetic Materials
OSTI ID:956585

We performed radio-frequency (RF) skin-depth measurements of antiferromagnetic UNiX compounds (X=Al, Ga, Ge) in magnetic fields up to 60 T and at temperatures between 1.4 to {approx}60 K. Magnetic fields are applied along different crystallographic directions and RF penetration-depth was measured using a tunnel-diode oscillator (TDO) circuit. The sample is coupled to the inductive element of a TDO resonant tank circuit, and the shift in the resonant frequency {Delta}f of the circuit is measured. The UNiX compounds exhibit field-induced magnetic transitions at low temperatures, and those transitions are accompanied by a drastic change in {Delta}f. The results of our skin-depth measurements were compared with previously published B-T phase diagrams for these three compounds.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-06NA25396
OSTI ID:
956585
Report Number(s):
LA-UR-09-01487; LA-UR-09-1487; JMMMDC; TRN: US201014%%1954
Journal Information:
Journal of Magnetism and Magnetic Materials, Journal Name: Journal of Magnetism and Magnetic Materials; ISSN 0304-8853
Country of Publication:
United States
Language:
English