Effect of hydrogen on the magnetic properties of Ho/sub 0. 85/Tb/sub 0. 15/Fe/sub 2/ and Dy/sub 0. 73/Tb/sub 0. 27/Fe/sub 2/
Journal Article
·
· J. Appl. Phys.; (United States)
X-ray powder photographs on Ho/sub 0.85/Tb/sub 0.15/Fe/sub 2/H/sub x/ (x = 0--3.1) and Dy/sub 0.73/Tb/sub 0.27/Fe/sub 2/H/sub x/ (x = 0--3.3) revealed that there is an expansion of the lattice upon hydrogenation. Magnetization measurements were performed using a PAR vibrating sample magnetometer in the temperature range 100--700 K. The total magnetic moment is found to decrease with increase of hydrogen content. The Curie temperature of the hydrides is considerably lowered, though the exact T/sub C/ in hydrides could not be determined due to desorption. Both Ho/sub 0.85/Tb/sub 0.15/Fe/sub 2/ and Dy/sub 0.73/Tb/sub 0.27/Fe/sub 2/ do not exhibit any compensation, whereas T/sub comp/ is observed and found to decreasse with x in the case of the Ho/sub 0.85/Tb/sub 0.15/Fe/sub 2/H/sub x/ system, x = 0.18--3.1. No compensation was observed even in the hydrides of the Dy/sub 0.73/Tb/sub 0.27/Fe/sub 2/ system. The temperature variation of magnetization of Ho/sub 0.85/Tb/sub 0.15/Fe/sub 2/H/sub x/ and Dy/sub 0.73/Tb/sub 0.27/Fe/sub 2/H/sub x/ suggests the occurrence of a spin-reorientation transition.
- Research Organization:
- Magnetism and Magnetic Materials Laboratory, Department of Physics, Indian Institute of Technology, Madras-600 036, India
- OSTI ID:
- 6116464
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 65:12; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ferromagnetic resonance studies on Ho sub 0. 85 Tb sub 0. 15 Fe sub 2 H sub x and Dy sub 0. 73 Tb sub 0. 27 Fe sub 2 H sub x systems
sup 57 Fe Mossbauer studies on Ho sub 0. 85 Tb sub 0. 15 Fe sub 2 H sub x and Dy sub 0. 73 Tb sub 0. 27 Fe sub 2 H sub x
Powder metallurgical processing of Tb sub 0. 27 Dy sub 0. 73 Fe sub 2 minus x (0 lt x le 0. 5) by hydrogen decrepitation
Journal Article
·
Wed Aug 01 00:00:00 EDT 1990
· Journal of Applied Physics; (USA)
·
OSTI ID:6729088
sup 57 Fe Mossbauer studies on Ho sub 0. 85 Tb sub 0. 15 Fe sub 2 H sub x and Dy sub 0. 73 Tb sub 0. 27 Fe sub 2 H sub x
Journal Article
·
Sun Dec 31 23:00:00 EST 1989
· Journal of Applied Physics; (USA)
·
OSTI ID:7171531
Powder metallurgical processing of Tb sub 0. 27 Dy sub 0. 73 Fe sub 2 minus x (0 lt x le 0. 5) by hydrogen decrepitation
Journal Article
·
Mon Apr 15 00:00:00 EDT 1991
· Journal of Applied Physics; (USA)
·
OSTI ID:5624510
Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DYSPROSIUM ALLOYS
HIGH TEMPERATURE
HYDROGEN ADDITIONS
HYDROGENATION
IMPURITIES
IRON ALLOYS
IRON BASE ALLOYS
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIZATION
MEDIUM TEMPERATURE
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SCATTERING
TERBIUM ALLOYS
X-RAY DIFFRACTION
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DYSPROSIUM ALLOYS
HIGH TEMPERATURE
HYDROGEN ADDITIONS
HYDROGENATION
IMPURITIES
IRON ALLOYS
IRON BASE ALLOYS
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIZATION
MEDIUM TEMPERATURE
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SCATTERING
TERBIUM ALLOYS
X-RAY DIFFRACTION