Accession Number : AD0435887


Title :   SPIN WAVES IN THE SPIN-FLOP PHASE OF AN ANTIFERROMAGNET, AND METASTABILITY OF THE SPIN-FLOP TRANSITION


Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA


Personal Author(s) : Wang, Yung-Li ; Callen, Herbert B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/435887.pdf


Report Date : Mar 1964


Pagination or Media Count : 16


Abstract : The spin-flop transition in a uniaxial antiferromagnet defines three critical fields; that of the true thermodynamic transition and those limiting the local stability of antiferromagnetic and spin-flop phases. The latter two are calculated by a spin-wave analysis. The results are in qualitative agreement with the hysteresis observed by Schelleng and Friedberg in the spin-flop transition in manganese bromide. The spin-wave spectrum of the spin-flop phase is given, and the magnetization in the spin-flop phase is found to increase more rapidly that linearly with field because of quantum corrections absent in molecular field theory.


Descriptors :   *FERROMAGNETISM , *SPINNING(MOTION) , MAGNETIC PROPERTIES , STABILITY , THERMODYNAMICS , MANGANESE COMPOUNDS , CONFIGURATIONS , BROMIDES , HYSTERESIS , MAGNETIC FIELDS , LOW TEMPERATURE , ELECTROMAGNETIC RADIATION


Subject Categories : Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE