Discussion on clusters, phasons and quasicrystal stabilisation

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Discussion of phasons in quasicrystals and their dynamics

Phasons are a type of excitation peculiar to quasicrystals and other incommensurate phases arising as a consequence of their spatial quasiperiodicity. Phason-related excitations are also observed in complex crystal structures known as approximants. This article briefly reviews the concepts of phasons with focus on current issues in their regard. We examine both continuum (hydrodynamic) and disc...

متن کامل

Ideal AlMnSi quasicrystal : a structural model with icosahedral clusters

A model for Al(Si)Mn quasicrystals is proposed. It is characterized by pure quasiperiodic long range order with icosahedral symmetry. The density and concentrations fit to the experimental values. The interatomic distances are compatible with crystallographic data and compare well to the related 03B1 phase. A large number of icosahedral clusters (Mackay icosahedra) are present in the model. J. ...

متن کامل

Icosahedral quasicrystals with continuous phasons

2014 A variety of models for icosahedral quasicrystals is constructed such that atoms move continuously under displacements along the phason space R3*, while their positions are separated by distances larger than some h > 0, a « hard core » diameter. The models exhibit icosahedral symmetry and the diffraction properties of perfect quasiperiodic structures. J. Phys. France 50 (1989) 3181-31...

متن کامل

Phasons and the plastic deformation of quasicrystals

The plastic deformation of quasicrystals (QC) is ruled by two types of singularities of the QC order, singularities of the ‘phonon’ strain field, and singularities of the ‘phason’ strain field. In the framework of the general topological theory of defects, in which the QC is defined as an irrational subset of a crystal of higher dimension, both types of defects appear as distinct components of ...

متن کامل

Near-field surface plasmons on quasicrystal metasurfaces

Excitation and manipulation of surface plasmons (SPs) are essential in developing cutting-edge plasmonic devices for medical diagnostics, biochemical spectroscopy and communications. The most common approach involves designing an array of periodic slits or grating apertures that enables coupling of the incident light to the SP modes. In recent years, plasmonic resonances, including extraordinar...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Philosophical Magazine

سال: 2006

ISSN: 1478-6435,1478-6443

DOI: 10.1080/14786430500419395