Magnetoresistance in dysprosium single crystal

Journal Article · Mon Nov 01 04:00:00 EST 1976 · Phys. Rev., B; (United States)

DOI:https://doi.org/10.1103/PhysRevB.14.4106· OSTI ID:7337901

Singh, R L

The magnetoresistance in the ferromagnetic phase of the Dy a-, b-, and c-axis crystals has been investigated in magnetic fields up to 75 kOe and in the temperature between 1--70/sup 0/K. It is anisotropic with respect to the crystallographic axes and to relative orientations of the field and the current. The longitudinal isotherms exhibit a minimum which increases in depth and moves to higher fields as the temperature increases. The transverse magnetoresistance in the basal plane crystals for fields above 20 kOe increases with the field in the entire temperature range. But for the c-axis crystal (I parallel < 0001 > and H parallel <112 > or <1010 >) above 25/sup 0/K, it decreases as field increases. These results have been discussed on the basis of scattering due to impurities, phonons, magnetic domains, and spin waves, and in terms of magnetic anisotropy of the metal. When the field is parallel to the b axis, the transverse-resistance isotherms around 20--40/sup 0/K show a resistance maximum of about 0.2% at a field which gradually decreases as temperature increases. The critical field for the spin-wave energy gap around 40/sup 0/K, as estimated from the resistance maximum is about 10 kOe.

• Research Organization: Department of Physics, Dalhousie University, Halifax, Nova Scotia, Canada, B3H 3J5
• OSTI ID: 7337901
• Journal Information: Phys. Rev., B; (United States), Journal Name: Phys. Rev., B; (United States) Vol. 14:9; ISSN PLRBA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals &amp; Alloys-- Physical Properties
DOMAIN STRUCTURE
DYSPROSIUM
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FERROMAGNETISM
IMPURITIES
MAGNETIC FIELDS
MAGNETISM
MAGNETORESISTANCE
METALS
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RARE EARTHS
SCATTERING
SPIN WAVES