Picosecond pulsed magnetic fields for studies of ultrafast magnetic phenomena

Author

Freeman, M.R. ; Ruf, R.R. ; Gambino, R.J.

Author_Institution

IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4840

Lastpage

4842

Abstract

Ultrafast optical techniques were used to develop novel time-resolved probes of magnetic dynamics. Picosecond-scale magnetic field pulses were launched from a photoconductive switch and applied to small samples which were then probed by time-delayed optical pulses, yielded temporal information in a conventional stroboscopic manner. Characteristics of the magnetic field pulses are described and illustrated through measurements of rapid relaxation effects in europium sulfide films at low temperatures

Keywords

europium compounds; ferromagnetic properties of substances; ferromagnetic relaxation; high-speed optical techniques; magnetic semiconductors; magnetic thin films; magneto-optical effects; microwave-optical double resonance; spin-lattice relaxation; time resolved spectra; time resolved spectroscopy; EuS; ODMR; low temperatures; optical detection; photoconductive switch; picosecond pulsed magnetic fields; rapid relaxation effects; spin-lattice relaxation times; time-delayed optical pulses; time-resolved probes; ultrafast magnetic phenomena; ultrafast optical techniques adaptation; Magnetic field measurement; Magnetic fields; Magnetic switching; Optical films; Optical pulses; Optical switches; Photoconductivity; Probes; Pulse measurements; Ultrafast optics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278964

Filename

278964