Crystal structure of R(Ti,Fe)/sub 12/(R = Nd,Sm) compound
Ferromagnetic phases in Fe-rich Nd-Ti-Fe and Sm-Ti-Fe systems have been synthesized by rf sputtering. Samples have been directly crystallized onto heated substrates with in-the-film-plane magnetic fields applied, as well as first deposited, in an amorphous form and then subsequently crystallized. For the Sm-Ti-Fe system only, a hard magnetic phase has been observed in subsequently crystallized amorphous deposits. The in-plane intrinsic coercivity /sub i/H/sub c/ of this phase was 31 kOe at 293 K and 58 kOe at 5 K. Both these systems exhibited a relatively soft magnetic phase near 85 at. % Fe with a coercivity of 1--2 kOe. The x-ray diffraction patterns of this phase were identified as tetragonal TnMn/sub 12/ type and its composition was R(TiFe/sub 11/). Lattice parameters are a = 8.579 +- 0.002 and c = 4.799 +- 0.002 A for Sm(TiFe/sub 11/). These parameters were fitted from 14 x-ray lines from the pattern with 2 theta between 25/sup 0/ and 55/sup 0/. It has also been possible to directly crystallized Nd-Ti-Fe and Sm-Ti-Fe films that exhibited an extreme (300) texture of the R/sub 2/Fe/sub 17/ phase.
- Research Organization:
- Physics Department, Queens College of CUNY, Flushing, New York 11367
- OSTI ID:
- 5420365
- Journal Information:
- J. Appl. Phys.; (United States), Vol. 63:8
- Country of Publication:
- United States
- Language:
- English
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IRON ALLOYS
CRYSTAL GROWTH METHODS
CRYSTAL STRUCTURE
NEODYMIUM ALLOYS
SAMARIUM ALLOYS
TITANIUM ALLOYS
AMORPHOUS STATE
FERROMAGNETIC MATERIALS
LATTICE PARAMETERS
MAGNETIC PROPERTIES
PHASE TRANSFORMATIONS
SPUTTERING
X-RAY DIFFRACTION
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COHERENT SCATTERING
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360102* - Metals & Alloys- Structure & Phase Studies