SEMIANNUAL REPORT, OCTOBER 1, 1965-MARCH 31, 1966.
Abstract
NUCLEAR RESONANCE IN SOLID H2 and D2. Measurements on derivatives of the line shape and on longitudinal relaxation time were carried out on solid H2 for several ortho concentrations as a function of temperature. A new interpretation was made of the relaxation mechanism in solid H2; the interpretation was based on electric quadrupole-quadrupole interaction. SPECIFIC HEAT OF RARE EARTH GARNETS: Measurements between 0.4 and 4.0 degrees K on a superpure yttrium, iron, garnet (YIG) sample show that the specific heat cannot be analyzed at low enough temperatures in terms of a T (3/2) spin wave contribution (corrected for anisotropy and dipolar coupling) and the T (3) lattice contribution. NUCLEAR RESONANCE OF FE-57 IN RARE EARTH GARNETS: The 57-Fe gyromagnetic ratio in YIG was measured with a precision comparable to that obtained by Endor measurements. Spinwave expressions for magnetization in YIG in an external magnetic field were tested at 63 and 77 degrees K.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1966
- Accession Number
- AD0631387
Entities
People
- Horst Meyer
Organizations
- Duke University