High-pressure phase research on Nb2O5 View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1972-03

AUTHORS

S. Tamura

ABSTRACT

Experimental results indicate that the direct transitions from the H form to the T form and from the H form to the B form of Nb2O5 are possible under high pressures. Both highly pure and less pure reagents were used. The distinct TT form was obtained only when less pure reagents were used so that the TT form seems to be stabilised by means of trace impurities. Previously the TT form was indexed as having a pseudohexagonal unit cell. However, the present distinct TT form has a monoclinic unit cell,a=7.238Å,b=15.79Å,c=7.188Å,β=119°59′,V=711.7(Å)3. Eight molecules are contained per cell. Probably only B, T and H have stable regions; the other polymorphs of Nb2O5 may be metastable forms or forms stabilised by impurities. More... »

PAGES

298-302

References to SciGraph publications

  • 1964-01. Die Kristallstruktur von ζ-Nb2O5 in THE SCIENCE OF NATURE
  • 1964-01. Eine neue Phase von Niobpentoxyd (Zeta-Nb2O5) in THE SCIENCE OF NATURE
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf00555631

    DOI

    http://dx.doi.org/10.1007/bf00555631

    DIMENSIONS

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