期刊
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
卷 402, 期 3, 页码 283-292出版社
ELSEVIER
DOI: 10.1016/j.physc.2003.10.006
关键词
neutron powder diffraction; crystal structure; double honeycomb lattice; P-HfNCl
NaxHfNCl powder samples with average sodium content x(av) = 0, 0.18, 0.29, and 0.80 have been studied. The neutron powder diffraction patterns exhibit the phase separation in NaxHfNCl system except for x = 0 and 0.29. Obtained phases are a pristine phase beta-HNCl, a superconducting phase NaxHfNCl (T-c = 22-19 K) with narrow x-width (x = 0.28-0.29), a non-superconducting crystalline phase Na0.9HfNCl, and a possible amorphous phase NaHfNCl (C) 2003 Elsevier B.V. All rights reserved.
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