Accession Number : ADA211905


Title :   Anisotropy and Microstructure of High-Coercivity Rare Earth Iron Permanent Magnets


Descriptive Note : Final rept. Mar 1986-Mar 1989


Corporate Author : TECHNISCHE UNIV VIENNA (AUSTRIA) INST OF APPLIED AND TECHNICAL PHYSICS


Personal Author(s) : Fidler, Josef ; Grossinger, Roland ; Kirchmayr, Hans ; Skalicky, Peter


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a211905.pdf


Report Date : Jun 1989


Pagination or Media Count : 27


Abstract : In Nd2 Fe14 B-based permanent magnets the coercivity is in practice only 20 - 40 % of the theoretical limits. The aim of this study is to investigate Nd-Fe-B based compounds with respect to their magnetic anisotropy behaviour and to characterize the microstructure of sintered Nd-Fe-B based permanent magnets. The anisotropy field HA was determined by using the Singular Point Detection (SPD) technique, and the microstructural investigations were carried out on a JEOL 200 CS analytical transmission electron microscope equipped with a high take-off energy dispersive (EDS) X-ray analyzer. Keywords: Magnetic anisotropy, Anisotropy field; pulsed field technique; Microstructure; electron microscopy; intrinsic coercive force; Nd-Fe-B permanent magnets.


Descriptors :   *MAGNETIC FIELDS , *MICROSTRUCTURE , HIGH ENERGY , X RAY APPARATUS , LIMITATIONS , ANISOTROPY , TAKEOFF , ANALYZERS , COERCIVE FORCE , ELECTRON MICROSCOPY , DETECTION , PULSES


Subject Categories : Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE