TITLE

Fast crystallization of chalcogenide glass for rewritable memories

AUTHOR(S)
Zhimei Sun; Jian Zhou; Blomqvist, Andreas; Johansson, Börje; Ahuja, Rajeev
PUB. DATE
August 2008
SOURCE
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p061913
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
By ab initio molecular dynamics simulations, we unraveled the unique network structure of amorphous Ge1Sb2Te4, which shows high rank of ordering and mostly consists of distorted defective octahedrons with a small portion of distorted tetrahedrons. The phase transition from amorphous to cubic Ge1Sb2Te4 would be mainly a process of angle rearrangements of tetrahedrons to octahedrons and vice versa.
ACCESSION #
33999999

 

Related Articles

  • Proposed truncated Cu-Hf tight-binding potential to study the crystal-to-amorphous phase transition. Yuanyuan Cui; Jiahao Li; Ye Dai; Baixin Liu // Journal of Applied Physics;Oct2010, Vol. 108 Issue 6, p063510 

    Proposed truncated Cu-Hf tight-binding potential was constructed by fitting the physical properties of Cu, Hf, and their stable compounds, i.e., Cu5Hf, Cu8Hf3, Cu10Hf7, and CuHf2. Based on the constructed potentials, molecular dynamics simulations were carried out to compare the relative...

  • Poisson ratio and plasticity of glasses. Sanditov, D. S.; Mantatov, V. V.; Sanditov, B. D. // Technical Physics;Apr2009, Vol. 54 Issue 4, p594 

    Analysis of experimental data reveals a regular relation between Poisson’s ratio and plastic characteristics of inorganic glasses.

  • Optical and electrical properties of obliquely deposited a-GeSe2 films. Bhardwaj, Priyamvada; Shishodia, P.; Mehra, R. // Journal of Materials Science;Feb2007, Vol. 42 Issue 4, p1196 

    Oblique deposition and exposure to photons of energy greater than the bandgap have a marked effect on the structure and consequently on electrical and optical properties of amorphous chalcogenides. This paper presents a detailed study of photoinduced effect and oblique deposition effect on...

  • In-situ real-time simultaneous measurements of photoinduced bandgap and volume changes in amorphous chalcogenide films. Ikeda, Y.; Shimakawa, K. // Journal of Materials Science: Materials in Electronics;Oct2007 Supplement, Vol. 18, p131 

    To understand the dynamics and correlations between photodarkening (PD) and photoinduced volume changes (PVC) in amorphous chalcogenides, a simultaneous PD and PVC measuring system based on computer analyzed spectroscope and phase-shifting interferometer (PSI) has been developed. This new system...

  • Photo-structural changes in chalcogenide glasses during illumination. Jai Singh; Tanaka, Keiji // Journal of Materials Science: Materials in Electronics;Oct2007 Supplement, Vol. 18, p423 

    A theory is developed for the processes of the creation of light induced defects, photo-darkening and volume expansion during illumination of chalcogenide glasses. Considering a linear chain of the sample, it is shown that the charge carrier–lattice interaction plays a common role in all...

  • MANY-PARTICLE EQUILIBRIUM PROPERTIES OF GLASSY CHALCOGENIDES: NUMERICAL SIMULATIONS IN THE COULOMB GLASS MODEL. CARAVACA, M.; GIMENO, F.; SOTO-MECA, A. // Chalcogenide Letters;Dec2015, Vol. 12 Issue 12, p693 

    In this paper, we investigate some many-particle equilibrium properties of the Coulomb glass model to deepen into the thermal behavior of glassy chalcogenides. Concretely, we focus on the dependence of the energy on the temperature, the many-particle density of states and the absorbed and...

  • Glass forming ability and short-range order in a binary bulk metallic glass by ab initio molecular dynamics. Jakse, N.; Pasturel, A. // Applied Physics Letters;9/15/2008, Vol. 93 Issue 11, p113104 

    We have performed a series of ab initio molecular dynamics simulations of Cu64Zr36 alloy, in order to study the glass forming ability in connection to the local order. The results show that Cu64Zr36 is characterized by a pronounced icosahedral short-range order (ISRO) in the liquid, undercooled,...

  • Al-centered icosahedral ordering in Cu46Zr46Al8 bulk metallic glass. Fang, H. Z.; Hui, X.; Chen, G. L.; Liu, Z. K. // Applied Physics Letters;3/2/2009, Vol. 94 Issue 9, pN.PAG 

    Icosahedral short-range order, of which Al atoms are caged in the center of icosahedra with Cu and Zr atoms being the vertices, has been evidenced in the Cu46Zr46Al8 glassy structure by ab initio molecular dynamics simulation. These Al-centered clusters distribute irregularly in the...

  • Multiple shear banding in a computational amorphous alloy model. Wakeda, M.; Shibutani, Y.; Ogata, S.; Park, J. // Applied Physics A: Materials Science & Processing;May2008, Vol. 91 Issue 2, p281 

    The strain localized phenomenon, so called shear bands (SBs), in an amorphous alloy have received a lot of attention in recent years. In this study, we microscopically investigated the nature and dynamics of multiple SBs using molecular dynamics model. In the SB region, intense shear-induced...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics