Accession Number:

AD0745722

Title:

Calculation of the Ultralow Temperature Behavior of Paramagnetic Systems with Exchange and Dipolar Interactions,

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1972-05-08

Pagination or Media Count:

79.0

Abstract:

The report deals with a precise calculation of the b2 coefficients in the specific heat for a number of ultralow temperature compounds. The result is given for the actual dipole-dipole interaction plus a varying amount of isotropic exchange v. Comparison with experimental data leads to a determination of v. Similar calculations are performed for the T to the -3rd power term in the specific heat. In this case there are two types of contributions one from the two-point summation and one from the three-point sum or ring diagram. The value of each is determined as experimental values of b2 with the calculated values of b2 are substituted in b3 and the values thus predicted, on the basis of isotropic exchange, are given. Author

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE