Magnetic Permeability and Relaxation Frequency in High Frequency Magnetic Materials

reportActive / Technical Report | Accession Number: ADP012285 | Open PDF

Abstract:

An investigation of the frequency behavior of polycrystalline ferrites is presented. It is shown that the low frequency dispersion f 10 MHz of permeability is associated with the bulging of pinned domain walls, and has a mixed resonance-relaxation character, closer to the latter. It is also shown that there is a linear relationship between the magnetocrystalline anisotropy constant, K1, and the relaxation frequency. The slope of this correlation depends on the grain size. Such a relationship could allow the determination of this basic parameter from polycrystalline samples.

Author(s):
Rosales, M. I. ; Montiel, H. ; Valenzuela, R.
Author Organization(s):
NATIONAL UNIV OF MEXICO MEXICO CITY INST FOR MATERIAL RESEARCH
Descriptive Note:
Conference proceedings
Supplementary Note:
Pub. in Materials Research Society symposium proceedings; v. 674 pU1.8.1-U1.8.6, 2001. This article is from ADA402512 Applications of Ferromagnetic and Optical Materials, Storage and Magnetoelectronics: Symposia Held in San Francisco, California, U.S.A. on April 16-20, 2001
Pagination:
0006

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DAAD19-00-1-0421, N00014-01-1-0734
Monitor Series:
ARO, ONR
 Subject Terms
Modernization Areas:
Microelectronics
Communities of Interest:
Advanced Electronics
Descriptor(s):
*HIGH FREQUENCY, *RELAXATION, *PERMEABILITY(MAGNETIC), *MAGNETIC MATERIALS, SYMPOSIA, DISPERSING, GRAIN SIZE, MAGNETIC RESONANCE, ANISOTROPY, ZINC, NICKEL, LOW FREQUENCY, SOLID STATE PHYSICS, FERRITES, POLYCRYSTALLINE, MEXICO, DOMAIN WALLS
Field(s)/Group(s):
Properties of Metals and Alloys, Crystallography, Electricity and Magnetism, Solid State Physics
Keyword(s):
COMPONENT REPORT, FOREIGN REPORTS
Report Date:
2001 Apr 01
Creation Date:
2002 Jun 26