2:30 PM–5:18 PM, Tuesday, March 6, 2007
Colorado Convention Center - Korbel 4E
Sponsoring Unit:
GMAG
Chair: Dave Pappas, National Institute of Standards and Technology, Boulder
Abstract ID: BAPS.2007.MAR.L15.1
2:30 PM–2:42 PM
Matthew D. Vannette
(Ames Laboratory and Department of Physics \& Astronomy, Iowa State University, Ames IA 50011)
Athena Safa-Sefat
(Ames Laboratory and Department of Physics \& Astronomy, Iowa State University, Ames IA 50011)
Joerg Schmalian
(Ames Laboratory and Department of Physics \& Astronomy, Iowa State University, Ames IA 50011)
Sergey L. Bud'ko
(Ames Laboratory and Department of Physics \& Astronomy, Iowa State University, Ames IA 50011)
Paul C. Canfield
(Ames Laboratory and Department of Physics \& Astronomy, Iowa State University, Ames IA 50011)
Rusian Prozorov
(Ames Laboratory and Department of Physics \& Astronomy, Iowa State University, Ames IA 50011)
We report tunnel diode resonator measurements of the 10 MHz dynamic magnetic susceptibility in the vicinity of the Curie temperature on a variety of ferromagnetic compounds with $T_{c}$ ranging from 4.5 K for CeVSb3 to 325 K for LaMn2Ge2. The outstanding sensitivity of the technique allows for a detection of the magnetic signal at pico-emu level. A sharp peak in susceptibility in the critical region is rapidly suppressed by applying relatively weak DC magnetic fields. Measurements are compared to specific heat, resistivity, and DC magnetization data. Results of scaling analysis in the critical fluctuations region are presented.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2007.MAR.L15.1