Formation, decomposition, and electrical transport properties of amorphous Hf-Ni and Hf-Co alloys

Journal Article · Mon Oct 01 00:00:00 EDT 1979 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.325724· OSTI ID:5836604

Buschow, K H.J.; Beekmans, N M

Amorphous Hf/sub 1-x/Ni/sub x/ and Hf/sub 1-x/Co/sub x/ alloys in the concentration range 0.2< or =x< or =0.9 were prepared by melt spinning. The crystallization behavior of these alloys was studied by means of differential scanning calorimetry and x-ray diffraction. At least two new compounds in the Hf-Ni system were observed to be formed upon crystallization of the amorphous alloys. The electrical resistivity (rho) in the amorphous alloys and in crystalline HfNi/sub 5/ was studied in the range from 4.2 to 300 K. Negative temperature dependences of rho were observed in several of the amorphous alloys, extending from x=0.25 to x=0.65 in Hf/sub 1-x/Ni/sub x/. The thermal stability of the amorphous alloys is discussed in terms of a diffusion mechanism. The extended Ziman theory of liquid metals was used in the interpretation of the temperature dependence of the resistivity.

• Research Organization: Philips Research Laboratories, Eindhoven, The Netherlands
• OSTI ID: 5836604
• Journal Information: J. Appl. Phys.; (United States), Vol. 50:10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT ALLOYS
ELECTRICAL PROPERTIES
SYNTHESIS
HAFNIUM ALLOYS
NICKEL ALLOYS
AMORPHOUS STATE
CALORIMETRY
CRYSTALLIZATION
DECOMPOSITION
QUANTITY RATIO
X-RAY DIFFRACTION
ALLOYS
CHEMICAL REACTIONS
COHERENT SCATTERING
DIFFRACTION
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SCATTERING
360104* - Metals &amp; Alloys- Physical Properties
360102 - Metals &amp; Alloys- Structure &amp; Phase Studies