Neutron diffraction and observation of superconductivity for tungsten borides, WB and W2B4

KAYHAN M., Hildebrandt E., Frotscher M., Senyshyn A., Hofmann K., Alff L., ...Daha Fazla

Solid State Sciences, cilt.14, sa.11-12, ss.1656-1659, 2012 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Özet
  • Cilt numarası: 14 Sayı: 11-12
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.solidstatesciences.2012.05.036
  • Dergi Adı: Solid State Sciences
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1656-1659
  • Anahtar Kelimeler: Crystal structure, Neutron diffraction, Particle size, Superconductivity, Tungsten boride
  • Uşak Üniversitesi Adresli: Evet

Özet

Tungsten borides are known to be very hard and metallic materials. Tungsten monoboride, WB, becomes superconducting at Tc = 4.3 K in the tetragonal modification and Tc = 2.8 K in the orthorhombic modification. The structures of the two WB modifications were revised based on X-ray and neutron powder diffraction. W2B4, formerly known as W2B5, also shows a superconducting transition at 5.4 K, which is suppressed for small grain samples. © 2012 Elsevier Masson SAS. All rights reserved.