Structure of Sputtered Amorphous Zr-Hf-Si Alloys
نویسندگان
چکیده
Amorphous (Zr,Hf)37Si63 alloys were produced by sputtering. Their total structure factors were determined by X-ray diffraction. Using the methods of isomorphous substitution and Reverse Monte Carlo simulation, the partial pair correlation functions were obtained. The results were compared with the partial functions of amorphous Ti40Si60. In the amorphous alloys under investigation the transition metal – metalloid correlation dominates the short range order.
منابع مشابه
XAFS analysis of Ni-Zr alloys after thermal and chemical treatment
Introduction Amorphous materials have no long-range order at the atomic length scale and show different properties as compared to typical crystalline materials. Among of them, amorphous alloys are in thermodynamically nonequilibrium, crystallized by heating and used as catalysts and catalyst precursors. Investigations on the relationships between their catalytic performances and structural chan...
متن کاملLarge variation of magnetic properties of amorphous Fe–Zr thin films with Ar pressure during sputtering
A large change is observed in the magnetic properties of amorphous Fe-Zr thin films sputtered at different Ar pressures. The change depends on the composition of the alloys and at compositions near 60 at.% Fe, for example, the magnetisation measured at 10 kOe increases 30-fold with an increase in the Ar pressure from 2 to 10 mTorr. The magnetic properties are well explained by a combination of ...
متن کاملساختار و خواص مغناطیسی آلیاژهای CoFeSiB انجماد سریع یافته
The effects of metalloids Si(4-27 at%) and B(5-22 at%) on the structure and magnetic properties of melt spun cobalt based alloys containing 5at% Fe have been studied. XRD results revealed that in non-eutectic ternary CoFeSi and CoFeB alloys, the additions of Si or B, alone can not lead to full amorphization of melt spun ribbons. In quaternary CoFeSiB alloys, the total amounts of Si and B additi...
متن کاملپایدارسازی ساختار تتراگونال زیرکونیا در سرمتهای لایه نازکZr-O و وابستگی آن به اندازه بلورکها
In this research, thin films of Zr/ZrO2 composites were deposited by reactive magnetron sputtering technique on Si and fused Silica substrates, and their structures were investigated by XRD method. During the deposition of the cermet layers, a Zr metallic target was sputtered in a gas mixture of Ar and O2. By controlling of O2 flow rate, the different metal volume fractions in the cermet layer...
متن کاملEffect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor.
High-entropy alloys are made from random mixtures of principal elements on simple lattices, stabilized by a high mixing entropy. The recently discovered body-centered cubic (BCC) Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor appears to display properties of both simple crystalline intermetallics and amorphous materials; e.g., it has a well-defined superconducting transition along with an exc...
متن کامل