Crystal structure, dimensionality, and 4d electron distribution in K0.30MoO3 and Rb0.30MoO3
作者： M. Ghedira , J. Chenavas , M. Marezio , J. Marcus
DOI: 10.1016/0022-4596(85)90154-9
关键词: Electrical resistivity and conductivity 、 Inorganic compound 、 Electron 、 Anisotropy 、 X-ray crystallography 、 Crystallography 、 Crystal structure 、 Single crystal 、 Lattice (order) 、 Chemistry
摘要: Abstract Single crystals of K0.30MoO3 and Rb0.30MoO3 were synthesized by electrolytic reduction MoO3/ A2MoO4 melts. The crystal structures refined from X-ray diffraction data (3265 1280 independent reflections, respectively). finalR andwR factors 0.037 0.047 for the K bronze 0.031 0.033 Rb bronze. lattice parameters body-centered cells used in present refinements were: K0.30Mo03,a = 16.2311(7),b 7.5502(4),c 9.8614(4)A˚,β 94.895(4)o; Rb0.30MoO3,a 16.361(3),b 7.555(1),c 10.094(2)A˚,β 93.87(5)o. 4d electron distribution over 20 Mo sites [4Mo(1), 8Mo(2), 8Mo(3)] unit cell are 10, 45, 45% K0.30Mo03 14, 43, 43% Rb0.30MoO3, respectively. In both cases about 90% electrons situated on those which contribute to electrical conductivity. variations versus temperature reported. thermal linear-expansion coefficient is highly anisotropic. structural dimensionality depends upon sublattice under consideration. K, Mo, O sublattices mono-, two-, three-dimensional, relationship between physical properties discussed.
harvard.edu
elsevier.com
sci-hub.se 参考文章(15)
R. Brusetti, B. K. Chakraverty, J. Devenyi, J. Dumas, J. Marcus, C. Schlenker, Transport Properties of the Blue Bronze K0.30MoO3 Springer, Boston, MA. pp. 181- 190 ,(1981) , 10.1007/978-1-4684-3899-4_24
G. Travaglini, I. Mörke, P. Wachter, CDW evidence in one-dimensional K0.3MoO3 by means of Raman scattering Solid State Communications. ,vol. 45, pp. 289- 292 ,(1983) , 10.1016/0038-1098(83)90483-0
William Fogle, Jerome H. Perlstein, Semiconductor-to-Metal Transition in the Blue Potassium Molybdenum Bronze,K0.30MoO3; Example of a Possible Excitonic Insulator Physical Review B. ,vol. 6, pp. 1402- 1412 ,(1972) , 10.1103/PHYSREVB.6.1402
J. Graham, A. D. Wadsley, The crystal structure of the blue potassium molybdenum bronze, K0.28MoO3 Acta Crystallographica. ,vol. 20, pp. 93- 100 ,(1966) , 10.1107/S0365110X66000173
Pierre Strobel, Martha Greenblatt, Crystal growth and electrical properties of lithium, rubidium, and cesium molybdenum oxide bronzes Journal of Solid State Chemistry. ,vol. 36, pp. 331- 338 ,(1981) , 10.1016/0022-4596(81)90444-8
W.H Zachariasen, Bond lengths in oxygen and halogen compounds of d and f elements Journal of The Less Common Metals. ,vol. 62, pp. 1- 7 ,(1978) , 10.1016/0022-5088(78)90010-3
G. Travaglini, P. Wachter, J. Marcus, C. Schlenker, The blue bronze K0.3MoO3: A new one-dimensional conductor Solid State Communications. ,vol. 37, pp. 599- 603 ,(1981) , 10.1016/0038-1098(81)90143-5
J. Dumas, C. Schlenker, J. Marcus, R. Buder, Nonlinear Conductivity and Noise in the Quasi One-Dimensional Blue Bronze K 0.30 Mo O 3 Physical Review Letters. ,vol. 50, pp. 757- 760 ,(1983) , 10.1103/PHYSREVLETT.50.757
J.P. Pouget, S. Kagoshima, C. Schlenker, J. Marcus, Evidence for a Peierls transition in the blue bronzes K0.30MoO 3 and Rb0.30MoO3 Journal de Physique Lettres. ,vol. 44, pp. 113- 120 ,(1983) , 10.1051/JPHYSLET:01983004403011300
H. Vincent, M. Ghedira, J. Marcus, J. Mercier, C. Schlenker, Structure cristalline d'un conducteur métallique bidimensionnel: Le bronze violet de potassium et molybdene K0.9Mo6O17 Journal of Solid State Chemistry. ,vol. 47, pp. 113- 121 ,(1983) , 10.1016/0022-4596(83)90050-6