Title: Phase transformations and discommensurations in hexagonal cuprous telluride
Abstract: physica status solidi (a)Volume 115, Issue 2 p. 399-412 Original Article Phase transformations and discommensurations in hexagonal cuprous telluride N. Vouroutzis, N. Vouroutzis Department of Physics, Solid State Section, Aristotle University of Thessaloniki Search for more papers by this authorC. Manolikas, C. Manolikas Department of Physics, Solid State Section, Aristotle University of Thessaloniki Search for more papers by this author N. Vouroutzis, N. Vouroutzis Department of Physics, Solid State Section, Aristotle University of Thessaloniki Search for more papers by this authorC. Manolikas, C. Manolikas Department of Physics, Solid State Section, Aristotle University of Thessaloniki Search for more papers by this author First published: 16 October 1989 https://doi.org/10.1002/pssa.2211150206Citations: 18 54006 Thessaloniki, Greece. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstracten Electron diffraction and microscopy observations reveal that the sequence of the phase transformations of Cu2−xTe (x < 0.05) is a typical case of a normal-incommensurate–commensurate phase transition, with the incommensurate phase splitted into two phases; one of these, the γ-phase, is modulated by regularly spaced discommensurations, whereas the second one, β-phase, is quasi-commensurate with a number of discommensurations pinned by defects in the crystal. At least five commensurate phases (αII-phase) of different periods are found at room temperature. The domain structure of the incommensurate phases is also analyzed. Particularly the formation mechanism of APB's in the γ-phase, exhibiting two well defined crystallographic orientations, is disclosed by dynamic observations of the δ → γ phase transformation. Abstractde Elektronenbeugung und mikroskopische Beobachtungen zeigen, daß die Folge der Phasentransformationen von Cu2−xTe (x < 0,05) einen typischen Fall eines normalen Phasenübergangs inkommensurabel–kommensurabel darstellt, wobei die inkommensurable Phase in zwei Phasen aufgespalten ist; eine von diesen, die γ-Phase, wird durch räumlich regulär angeordnete Unmeßbarkeiten moduliert, während die zweite, die β-Phase, quasi-kommensurabel ist, mit einer Anzahl von Unmeßbarkeiten, die durch Defekte im Kristall festgehalten werden. Wenigstens fünf kommensurable Phasen (αII-Phase) mit unterschiedlichen Perioden werden bei Zimmertemperatur gefunden. Die Domänenstruktur der inkommensurablen Phasen wird ebenfalls analysiert. Speziell der Bildungsmechanismus der APB's in der γ-Phase, die zwei gut definierte kristallographische Richtungen zeigen, wird durch dynamische Beobachtungen des δ → γ-Phasenübergangs aufgedeckt. References 1 V. M. Nabutovskii, N. A. Nemov, and Yu. G. Peisakhovich, Soviet Phys. – J. exper. theor. Phys. 52, 111 (1980). 2 N. Vouroutzis and C. Manolikas, Phys. stat. sol. (a) 111, 491 (1989). 3 H. Novotny, Z. Metallk. 37, 40 (1946). 4 S. Amelinckx, J. Van Landuyt, and G. Van Tendeloo, in: Modulated Structure Materials, Ed. T. Tsakalakas, NATO ASI Series, 1984 (p. 183). 5 S. Schneck, J. C. Toledano, C. Jaffrin, J. Aubree, B. Joukoff, and A. Cadelotand, Phys. Rev. B 25, 1766 (1982). 6 C. Manolikas and S. Amelinckx, Phys. stat. sol. (a) 61, 179 (1980). 7 C. H. Chen, J. M. Gibson, and R. M. Fleming, Phys. Rev. B 26, 184 (1982). 8 J. Mahy, J. Van Landuyt, and S. Amelinckx, Phys. stat. sol. (a) 77, K1 (1983). J. Mahy, J. Van Landuyt, S. Amelinckx, Y. Uchida, K. D. Bronsema, and S. Van Smaalen, Phys. Rev. Letters 55, 1188 (1986). 9 H. Bestgen, Solid State Commun. 58, 197 (1986). 10 G. Van Tendeloo, S. Amelinckx, C. Manolikas, and Wen Shulin, Phys. stat. sol. (a) 91, 483 (1985). 11 S. Amelinckx, J. Physique 35, C7-1 (1974). 12 K. Fujiwara, J. Phys. Soc. Japan 12, 7 (1957). 13 R. Deblieck, Thesis, University of Antwerp, 1986. 14 J. D. Toledano, Ann. Telecomm. 39, 278 (1984). Y. Ishibashi, Ferroelectrics 24, 119 (1980); Ferroelectrics 35, 111 (1981). 15 V. L. Pokrovsky, J. Physique 42, 761 (1981). 16 V. Marinković and S. Amelinckx, Phys. stat. sol. (a) 6, 823 (1964). 17 C. Manolikas and S. Amelinckx, Phys. stat. sol. (a) 60, 607 (1980). Citing Literature Volume115, Issue216 October 1989Pages 399-412 ReferencesRelatedInformation
Publication Year: 1989
Publication Date: 1989-10-16
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 22
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