TITLE

Spherical Nb single crystals containerlessly grown by electrostatic levitation

AUTHOR(S)
Sung, Y. S.; Takeya, H.; Hirata, K.; Togano, K.
PUB. DATE
May 2003
SOURCE
Applied Physics Letters;5/26/2003, Vol. 82 Issue 21, p3638
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Spherical Nb (T[sub m]= 2750 K) single crystals were grown via containerless electrostatic levitation (ESL). Samples became spherical at melting in levitation and undercooled typically 300-450 K prior to nucleation. As-processed samples were still spherical without any macroscopic shape change by solidification showing a uniform dendritic surface morphology. Crystallographic {111} planes exposed in equilateral triangular shapes on the surface by preferential macroetching and spotty back-reflection Laue patterns confirm the single crystal nature of the ESL-processed Nb samples. No hysteresis in magnetization between zero field and field cooling also implies a clean defect-free condition of the spherical Nb single crystals.
ACCESSION #
9815668

 

Related Articles

  • Nb-doped single crystalline MoS2 field effect transistor. Das, Saptarshi; Demarteau, Marcellinus; Roelofs, Andreas // Applied Physics Letters;4/30/2015, Vol. 106 Issue 17, p1 

    We report on the demonstration of a p-type, single crystalline, few layer MoS2 field effect transistor (FET) using Niobium (Nb) as the dopant. The doping concentration was extracted and determined to be ~3 × 1019/cm³. We also report on bilayer Nb-doped MoS2 FETs with ambipolar conduction....

  • On the contribution of dislocations to the resistivity of niobium. Sokolenko, V. I. // Low Temperature Physics;Apr99, Vol. 25 Issue 4, p263 

    Deals with dislocations in the core of niobium single crystals. Homogeneous structure with a high density of uniformly distributed dislocations; Interrelation between the electron-impurity and electron-dislocation scattering at low temperatures for a metal.

  • Effects of Nb addition on icosahedral quasicrystalline phase formation and glass-forming ability of Zr–Ni–Cu–Al metallic glasses. Fan, Cang; Li, Chunfei; Inoue, Akihisa; Haas, Volker // Applied Physics Letters;8/13/2001, Vol. 79 Issue 7 

    This work shows that the crystallization process of Zr–Ni–Cu–Al metallic glass is greatly influenced by adding Nb as an alloying element. Based on the results of the differential scanning calorimetry experiments for metallic glasses Zr[sub 69-x]Nb[sub x]Ni[sub 10]Cu[sub...

  • Single crystals of Nb-Ta superlattice grown by molecular-beam epitaxy. Nishihata, Yasuo; Nakayama, Masaaki; Kato, Hiromu; Sano, Naokatsu; Terauchi, Hikaru // Journal of Applied Physics;11/15/1986, Vol. 60 Issue 10, p3523 

    Presents a study that grew single crystals of niobium-tantalum superlattice by molecular-beam epitaxy. Epitaxial relations between the samples and several kinds of sapphire substrates; Interface region between niobium and tantalum layers; Terraced structure of the superlattice.

  • Tunneling microscopy of NbSe2 in air. Dahn, D. C.; Watanabe, M. O.; Blackford, B. L.; Jericho, M. H. // Journal of Applied Physics;1/15/1988, Vol. 63 Issue 2, p315 

    Studies the atomic-resolution images of niobiom compound single crystals in air. Characteristics of the compound; Details on the experiment; Discussion on the result of the study.

  • Monocrystal elastic constants of NbC. Ledbetter, H. M.; Chevacharoenkul, S.; Davis, R. F. // Journal of Applied Physics;9/1/1986, Vol. 60 Issue 5, p1614 

    Presents a study in which the monocrystal elastic constants of niobium carbide are calculated. Implementation of ultrasonic methods at ambient temperatures; Computations for the quasi-isotropic elastic constants and the elastic Debye characteristic temperature; Implications of the Blackman diagram.

  • High-quality single-crystal Nb films and influences of substrates on the epitaxial growth. Oya, Gin-ichiro; Koishi, Masanori; Sawada, Yasuji // Journal of Applied Physics;8/15/1986, Vol. 60 Issue 4, p1440 

    Presents information on a study that reported that epitaxially grew highly pure single-crystal niobium films with high superconducting transition temperatures and high resistance ratios on single-crystal sapphire and MgO substrates. Experimental procedures; Experimental results and discussion;...

  • Lifetime of small polarons in iron-doped lithium-niobate crystals. Berben, D.; Buse, K. // Journal of Applied Physics;2/1/2000, Vol. 87 Issue 3, p1034 

    Presents information on a study which investigated the depopulation dynamics of lithium-niobate center in iron-doped lithium niobate crystals. Experimental methods; Results and discussion; Influence of pump-light intensity on the temporal evolution; Conclusions.

  • Structure and Properties of Niobium-Doped Potassium Titanyl Phosphate Crystals. Losevskaya, T. Yu.; Alekseeva, O. A.; Yanovskiı, V. K.; Voronkova, V. I.; Sorokina, N. I.; Simonov, V. I.; Stefanovich, S. Yu.; Ivanov, S. A.; Eriksson, S.; Zverkov, S. A. // Crystallography Reports;Sep2000, Vol. 45 Issue 5, p739 

    A series of potassium titanyl phosphate crystals, KTiOPO[sub 4], with various concentrations of niobium dopant has been grown, and some of their physical properties and structural characteristics have been studied. The incorporation of a small amount of niobium results in considerable changes in...

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