Published February 2005
| Version v1
Journal article
Vibrational and electronic properties of nanocrystal Cy90Nb10 composite
- 1. Rossijskij Nauchnyj Tsentr Kurchatovskij Inst., Moscow (Russian Federation)
Description
The vibrational, electronic, and superconducting properties of a Cu90Nb10 nanocrystalline composite undergoing a transition from a coarse-grained state to a nanocrystalline state are investigated using neutron scattering and low-temperature heat capacity measurements. It is found that, compared to a coarse-grained sample, the nanocomposite is characterized by a higher density of low-frequency excitations and a decrease both in the density of states and in the superconducting transition temperature due to the size effect
Abstract (Russian)
Исследованы колебательные, электронные и сверхпроводящие свойства композита Cu90Nb10 при переходе от крупнозернистого к нанокристаллическому состоянию с помощью метода рассеяния нейтронов и измерений низкотемпературной теплоемкости. Обнаружены увеличения плотности низкочастотных возбуждений в нанокомпозите по сравнению с крупнозернистым образцом и уменьшение плотности электронных состояний и температуры сверхпроводящего перехода, связанных с размерным эффектомAdditional details
Additional titles
- Original title (Russian)
- Колебательные и электронные свойства нанокристаллического компосита Cу
Publishing Information
- Journal Title
- Fizika Tverdogo Tela
- Journal Volume
- 47
- Journal Issue
- 2
- Journal Page Range
- p. 350-353
- ISSN
- 0367-3294
- CODEN
- FTVTAC
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 37054648
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- COPPER COMPOUNDS; DEBYE TEMPERATURE; ELECTRONIC STRUCTURE; ENERGY-LEVEL DENSITY; FERMI LEVEL; NANOSTRUCTURES; NEUTRON DIFFRACTION; NIOBIUM COMPOUNDS; SPECIFIC HEAT; SUPERCONDUCTING COMPOSITES; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; VIBRATIONAL STATES
- Descriptors DEC
- COHERENT SCATTERING; COMPOSITE MATERIALS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ENERGY LEVELS; EXCITED STATES; MATERIALS; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; SCATTERING; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- 10 refs., 6 figs., 1 tab.