Magnetic relaxation effects in PrCo/sub 5/ and Sm(x)nd(1-x)Co/sub 5/ induced by hydrogen and deuterium. Final report, 3 Dec 1973--30 Sep 1974

Technical Report · Wed Jan 01 00:00:00 EST 1975

OSTI ID:7348058

Maartense, I

Measurements of the ac susceptibility of PrCo/sub 5/ powder parallel to its c-axis show the existence of two relaxation processes which are present in samples exposed to hydrogen or deuterium but not in degassed samples. The two relaxations have time constants of 10 s at 165 and at 200/sup 0/K and are described by effective activation energies of 0.37 eV and 0.51 eV, respectively. Sm(x)Nd(1-x)Co(x) crystals treated with hydrogen show a magnetic relaxation equivalent to the higher energy process in PrCo/sub 5/; between -20 and 50/sup 0/C, a strong Barkhausen effect dominates the magnetic behavior.

• Research Organization: Manitoba Univ., Winnipeg (Canada). Dept. of Physics
• DOE Contract Number: F33615-73-C-5060
• OSTI ID: 7348058
• Report Number(s): AD-A-011779
• Resource Relation: Other Information: See also report dated Oct 1973, AD--775717
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT ALLOYS
MAGNETIC SUSCEPTIBILITY
PRASEODYMIUM ALLOYS
SAMARIUM ALLOYS
DEGASSING
DEUTERIUM
HYDROGEN
RELAXATION
ALLOYS
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MAGNETIC PROPERTIES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
STABLE ISOTOPES
360104* - Metals & Alloys- Physical Properties