Accession Number : AD0440251


Title :   NEUTRON DIFFRACTION INVESTIGATION OF A GADOLINIUM SINGLE CRYSTAL,


Corporate Author : COLLEGE OF WILLIAM AND MARY WILLIAMSBURG VA


Personal Author(s) : Will,G ; Nathans,R


Report Date : Jan 1964


Pagination or Media Count : 2


Abstract : A single-crystal disk of Gd cut parallel to (00.1) has been studied in zero magnetic field. A careful search alng the perpendicular to the c axis in the neighborhood of the (00.2) reflection has failed to reveal any satellites in the temperature range 77 to 290 K. Thus unlike the rare-earth elements from Tb to Tm, gadolinium is a normal ferromagnet. Above 248 K, the moment is aligned along the c axis. Below this temperature, the moments make an angle with the c axis which reaches a maximum of 75 at 195 K and approaches 30 at 4 K. The coherent nuclear scattering amplitude has been estimated by scaling the nuclear scattering to the magnetic scattering in the (00.2) reflection. (Author)


Descriptors :   *GADOLINIUM , NEUTRON DIFFRACTION , FERROMAGNETISM , SINGLE CRYSTALS , NUCLEAR SCATTERING , MAGNETIC PROPERTIES , TEMPERATURE , COHERENT SCATTERING


Distribution Statement : APPROVED FOR PUBLIC RELEASE