Nuclear magnetic resonance studies of /sup 143/Nd and /sup 145/Nd in Nd-Fe-B type alloys

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.336299· OSTI ID:5385904

Potenziani, II, E

Nuclear magnetic resonance of /sup 143/Nd and /sup 145/Nd in Nd/sub 2/Fe/sub 14/B and Nd/sub 15/Fe/sub 77/B/sub 8/ at 4.2 K by zero-field spin-echo nuclear magnetic resonance has been used to determine hyperfine fields, magnetic moments, and relaxation times for the two inequivalent Nd crystal sites. It was found that the Nd spin-echo spectra of Nd/sub 2/Fe/sub 14/B and Nd/sub 15/Fe/sub 77/B/sub 8/ are essentially identical, which is consistent with the Nd signal arising from the Nd/sub 2/Fe/sub 14/B phase in Nd/sub 15/Fe/sub 77/B/sub 8/. The calculated Nd moments are higher than those obtained by neutron diffraction by 15 to 20%. The relaxation time mechanism appears to arise both from first-order quadrupolar broadening and from anisotropies in the hyperfine field distribution.

• Research Organization: U.S. Army Electronics Technology and Devices Laboratory (ERADCOM), Fort Monmouth, New Jersey 07703-5302
• OSTI ID: 5385904
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 58:7; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ANISOTROPY
BORON ALLOYS
COHERENT SCATTERING
CURIE POINT
DIFFRACTION
ELECTRIC FIELDS
EVEN-ODD NUCLEI
HYPERFINE STRUCTURE
INTERMEDIATE MASS NUCLEI
IRON ALLOYS
ISOTOPES
MAGNETIC MOMENTS
MAGNETIC RESONANCE
NEODYMIUM 143
NEODYMIUM 145
NEODYMIUM ALLOYS
NEODYMIUM ISOTOPES
NEUTRON DIFFRACTION
NUCLEAR MAGNETIC RESONANCE
NUCLEI
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
RARE EARTH NUCLEI
RELAXATION TIME
RESONANCE
SCATTERING
SPIN ECHO
STABLE ISOTOPES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE