Structural transformations in amorphous $ crystalline phase change of Ga-Sb alloys
نویسندگان
چکیده
of Ga-Sb alloys T. G. Edwards, I. Hung, Z. Gan, B. Kalkan, S. Raoux, and S. Sen Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, USA Center of Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, USA Advanced Light Source, Lawrence Berkeley Laboratory, Berkeley, California 20015, USA IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, USA
منابع مشابه
The Study of Transformations in Glassy and Crystalline Alloys Using Thermoelectric Power Measurements
Thermo-electric power (S) measurements were applied to detect the compositional change in (FeNi)80B20 glasses. It was found, that S does not alter monotonically with the Ni content, which hints to the existence of a hidden structural change in amorphous state. The S measurement was also applied to detect non-diffusive (martensitic) phase transformations in crystalline FeNi alloys.
متن کاملInfluence of the local structure in phase-change materials on their dielectric permittivity
Ge-Sb-Te alloys, which belong to the phase-change materials, are promising materials for data storage and display and data visualization applications due to their unique properties. This includes a remarkable difference of their electrical and optical properties in the amorphous and crystalline state. Pronounced change of optical properties for Ge-Sb-Te alloys is linked to the different bonding...
متن کاملStructural transition and enhanced phase transition properties of Se doped Ge2Sb2Te5 alloys
Amorphous Ge₂Sb₂Te₅ (GST) alloy, upon heating crystallize to a metastable NaCl structure around 150°C and then to a stable hexagonal structure at high temperatures (≥250°C). It has been generally understood that the phase change takes place between amorphous and the metastable NaCl structure and not between the amorphous and the stable hexagonal phase. In the present work, it is observed that t...
متن کاملMolecular dynamics study of structural, mechanical, and vibrational properties of crystalline and amorphous Ga1ÀxInxAs alloys
Using an interaction potential scheme, molecular dynamics ~MD! simulations are performed to investigate structural, mechanical, and vibrational properties of Ga12xInxAs alloys in the crystalline and amorphous phases. For the crystalline phase we find that: ~i! Ga–As and In–As bond lengths vary only slightly for different compositions; ~ii! the nearest-neighbor cation–cation distribution has a b...
متن کاملAluminum-Centered Tetrahedron-Octahedron Transition in Advancing Al-Sb-Te Phase Change Properties
Group IIIA elements, Al, Ga, or In, etc., doped Sb-Te materials have proven good phase change properties, especially the superior data retention ability over popular Ge2Sb2Te5, while their phase transition mechanisms are rarely investigated. In this paper, aiming at the phase transition of Al-Sb-Te materials, we reveal a dominant rule of local structure changes around the Al atoms based on ab i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013