Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).

View the beta site
NIST logo

Publication Citation: Pulsed inductive microwave magnetometer

NIST Authors in Bold

Author(s): Anthony B. Kos; Thomas J. Silva; Pavel Kabos;
Title: Pulsed inductive microwave magnetometer
Published: October 01, 2002
Abstract: We describe the apparatus, software, and measurement procedures for a pulsed inductive microwave magnetometer (PIMM). PIMM can measure the dynamical properties of materials used in recording heads for magnetic storage applications and it can be used as a general magnetodynamics diagnostic tool. PIMM uses a coplanar waveguide as both a source of fast pulsed magnetic fields and as an inductive flux sensor. Magnetic filed pulses are provided by a 10 V, 55 ps risetime pulse generator; a 20 GHz digital sampling oscilloscope is used to acquire the fast pulse data; and orthogonal Helmholtz pairs provide the bias and saturating fields required for the measurement. The system can measure dynamical behavior as a function of several variables, including applied magnetic bias filed, magnetic pulsed filed amplitude and width, and sample orientation. Using a fast Fourier transform, PIMM can determine the frequency dependence of the complex magnetic permeability, as well as the step and impulse responses of the magnetic system. Data from 50 nm Ni-Fe and rare-earth-doped Ni-Fe thin-films are presented.
Citation: Review of Scientific Instruments
Volume: 73
Issue: 10
Pages: pp. 3563 - 3569
Keywords: dynamical behavior,magnetic permeability,magnetodynamic,magnetodynamic permeameter,Ni-Fe films,permeameter
Research Areas: Electromagnetics
PDF version: PDF Document Click here to retrieve PDF version of paper (816KB)