Accession Number:

AD0440251

Title:

NEUTRON DIFFRACTION INVESTIGATION OF A GADOLINIUM SINGLE CRYSTAL,

Descriptive Note:

Corporate Author:

COLLEGE OF WILLIAM AND MARY WILLIAMSBURG VA

Personal Author(s):

Report Date:

1964-01-01

Pagination or Media Count:

2.0

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

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE