Bulk modulus and nonuniform compression of Nb_{3}Te_{4} and In_{x}Nb_{3}Te_{4} (x <1) channel compounds
(2001) In Acta Crystallographica. Section B: Structural Science 57(5). p.665672 Abstract
The crystal structures of Nb_{3}Te_{4} and In_{x}Nb_{3}Te_{4} [x = 0.539 (4)] are reported for a series of pressures between 0 and 40 GPa. Both compounds crystallize in space group P6_{3}/m with a = b = 10.671 and c = 3.6468 Å for Nb_{3}Te_{4}, and a = b = 10.677 and c = 3.6566 Å for In_{x}Nb_{3}Te_{4} at ambient conditions. Phase transitions were not observed. Highpressure Xray powder diffraction was measured using a diamond anvil cell and synchrotron radiation. Full Rietveld refinements provided the values of the lattice parameters and the values of the atomic coordinates at each pressure. The bulk modulus is found as K_{0} = 70 (5) GPa... (More)
The crystal structures of Nb_{3}Te_{4} and In_{x}Nb_{3}Te_{4} [x = 0.539 (4)] are reported for a series of pressures between 0 and 40 GPa. Both compounds crystallize in space group P6_{3}/m with a = b = 10.671 and c = 3.6468 Å for Nb_{3}Te_{4}, and a = b = 10.677 and c = 3.6566 Å for In_{x}Nb_{3}Te_{4} at ambient conditions. Phase transitions were not observed. Highpressure Xray powder diffraction was measured using a diamond anvil cell and synchrotron radiation. Full Rietveld refinements provided the values of the lattice parameters and the values of the atomic coordinates at each pressure. The bulk modulus is found as K_{0} = 70 (5) GPa for Nb_{3}Te_{4} and as K_{0} = 73 (4) GPa for In_{x}Nb_{3}Te_{4}. The analysis of the pressure dependences of the detailed crystal structures shows that the compression along c involves the folding up of the quasionedimensional zigzag chains of Nb. The compression perpendicular to c is entirely due to the reduction of the diameter of the channels. The presence of intercalated In atoms is found to have hardly any influence on the compression behaviour up to 40 GPa.
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 author
 Wunschel, Markus; Dinnebier, Robert E.; Carlson, Stefan ^{LU} and Van Smaalen, Sander
 publishing date
 200110
 type
 Contribution to journal
 publication status
 published
 in
 Acta Crystallographica. Section B: Structural Science
 volume
 57
 issue
 5
 pages
 8 pages
 publisher
 WileyBlackwell
 external identifiers

 Scopus:0038842541
 ISSN
 01087681
 DOI
 10.1107/S0108768101011685
 language
 English
 LU publication?
 no
 id
 f50dcecdbd1743b1ba75b1486bfce64c
 date added to LUP
 20160504 11:58:50
 date last changed
 20161019 09:52:32
@misc{f50dcecdbd1743b1ba75b1486bfce64c, abstract = {<p>The crystal structures of Nb<sub>3</sub>Te<sub>4</sub> and In<sub>x</sub>Nb<sub>3</sub>Te<sub>4</sub> [x = 0.539 (4)] are reported for a series of pressures between 0 and 40 GPa. Both compounds crystallize in space group P6<sub>3</sub>/m with a = b = 10.671 and c = 3.6468 Å for Nb<sub>3</sub>Te<sub>4</sub>, and a = b = 10.677 and c = 3.6566 Å for In<sub>x</sub>Nb<sub>3</sub>Te<sub>4</sub> at ambient conditions. Phase transitions were not observed. Highpressure Xray powder diffraction was measured using a diamond anvil cell and synchrotron radiation. Full Rietveld refinements provided the values of the lattice parameters and the values of the atomic coordinates at each pressure. The bulk modulus is found as K<sub>0</sub> = 70 (5) GPa for Nb<sub>3</sub>Te<sub>4</sub> and as K<sub>0</sub> = 73 (4) GPa for In<sub>x</sub>Nb<sub>3</sub>Te<sub>4</sub>. The analysis of the pressure dependences of the detailed crystal structures shows that the compression along c involves the folding up of the quasionedimensional zigzag chains of Nb. The compression perpendicular to c is entirely due to the reduction of the diameter of the channels. The presence of intercalated In atoms is found to have hardly any influence on the compression behaviour up to 40 GPa.</p>}, author = {Wunschel, Markus and Dinnebier, Robert E. and Carlson, Stefan and Van Smaalen, Sander}, issn = {01087681}, language = {eng}, number = {5}, pages = {665672}, publisher = {ARRAY(0x8ed7a20)}, series = {Acta Crystallographica. Section B: Structural Science}, title = {Bulk modulus and nonuniform compression of Nb<sub>3</sub>Te<sub>4</sub> and In<sub>x</sub>Nb<sub>3</sub>Te<sub>4</sub> (x <1) channel compounds}, url = {http://dx.doi.org/10.1107/S0108768101011685}, volume = {57}, year = {2001}, }