New ternary barium ruthenates: 10H-type BaRuO3 and Ba2Ru7O18
作者： Toshiyuki Ogawa , Hirohiko Sato
DOI: 10.1016/J.JALLCOM.2004.04.035
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摘要: Abstract We report on structures, magnetisms, and transport properties of two new barium ruthenates, 10H-type BaRuO3 Ba2Ru7O18. The crystal structure 10H-BaRuO3 consists face-shared dimers trimers RuO6 octahedra. magnetic susceptibility is 7.7×10−4 emu/mol at RT. interpret its very weak temperature dependence as Pauli paramagnetism enhanced by electron correlations. resistivity 8.5×10−2 Ω cm 296 K. slope the R versus T curve negative in whole temperature. It indicates metallic or semi-metallic electronic states. Ba2Ru7O18 composed edge-shared tetramers 3.7×10−4 emu/mol Ru Its almost temperature-independent character also explained terms 6.7×10−4 Ω cm In this case, positive, linear to T1.2 below 25 K. This shows a large deviation from Fermi-liquid criterion.
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sci-hub.se 参考文章(17)
P. Khalifah, K. D. Nelson, R. Jin, Z. Q. Mao, Y. Liu, Q. Huang, X. P. A. Gao, A. P. Ramirez, R. J. Cava, Non-Fermi-liquid behaviour in La4Ru6O19. Nature. ,vol. 411, pp. 669- 671 ,(2001) , 10.1038/35079534
John J. Randall, Roland Ward, The Preparation of Some Ternary Oxides of the Platinum Metals1,2 Journal of the American Chemical Society. ,vol. 81, pp. 2629- 2631 ,(1959) , 10.1021/JA01520A007
Shuji Nishizaki, Yoshiteru Maeno, Snorre Farner, Shin-ichi Ikeda, Toshizo Fujita, Evidence for unconventional superconductivity of Sr2RuO4 from specific-heat measurements Journal of the Physical Society of Japan. ,vol. 67, pp. 560- 563 ,(1998) , 10.1143/JPSJ.67.560
Jean Renaudin, Gérard Ferey, Ariel de Kozak, Maurice Samouël, Philippe Lacorre, Crystal and magnetic structures of the ferrimagnet Ba2Ni7F18 Solid State Communications. ,vol. 65, pp. 185- 188 ,(1988) , 10.1016/0038-1098(88)90884-8
J. T. Rijssenbeek, R. Jin, Yu. Zadorozhny, Y. Liu, B. Batlogg, R. J. Cava, Electrical and magnetic properties of the two crystallographic forms ofBaRuO3 Physical Review B. ,vol. 59, pp. 4561- 4564 ,(1999) , 10.1103/PHYSREVB.59.4561
Seung-Tae HONG, Arthur W. Sleight, Crystal Structure of 4H BaRuO3: High Pressure Phase Prepared at Ambient Pressure☆ Journal of Solid State Chemistry. ,vol. 128, pp. 251- 255 ,(1997) , 10.1006/JSSC.1996.7200
L. Klein, L. Antognazza, T. H. Geballe, M. R. Beasley, A. Kapitulnik, Possible non-Fermi-liquid behavior of CaRuO 3 Physical Review B. ,vol. 60, pp. 1448- 1451 ,(1999) , 10.1103/PHYSREVB.60.1448
T. Negas, R.S. Roth, Phase equilibria and structural relations in the system BaMnO3−x Journal of Solid State Chemistry. ,vol. 3, pp. 323- 339 ,(1971) , 10.1016/0022-4596(71)90068-5
Y. Maeno, H. Hashimoto, K. Yoshida, S. Nishizaki, T. Fujita, J. G. Bednorz, F. Lichtenberg, Superconductivity in a layered perovskite without copper Nature. ,vol. 372, pp. 532- 534 ,(1994) , 10.1038/372532A0
Paul C. Donohue, Lewis Katz, Roland Ward, The Crystal Structure of Barium Ruthenium Oxide and Related Compounds Inorganic Chemistry. ,vol. 4, pp. 306- 310 ,(1965) , 10.1021/IC50025A010