Phase transitions in C60•C8H8 under hydrostatic pressure

被引：2

作者：

Francis, E. A. ^{[1
]}

Durko, G. ^{[2
]}

Jalsovszky, I. ^{[2
]}

Klupp, G. ^{[3
]}

Kamaras, K. ^{[3
]}

Kovats, E. ^{[3
]}

Pekker, S. ^{[3
,4
]}

Kuntscher, C. A. ^{[1
]}

机构：

[1] Univ Augsburg, D-86159 Augsburg, Germany

[2] Eotvos Lorand Univ, Dept Organ Chem, H-1518 Budapest, Hungary

[3] Hungarian Acad Sci, Inst Solid State Phys & Opt, Wigner Res Ctr Phys, H-1525 Budapest, Hungary

[4] Obuda Univ, H-1034 Budapest, Hungary

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2012年 / 249卷 / 12期

关键词：

infrared spectroscopy; high pressure; phase transitions; fullerene-based materials; INFRARED-SPECTROSCOPY; SOLID C60; C-60; TEMPERATURE; FULLERENES; INTERCALATION; NANOTUBES; CUBANE; NE;

D O I：

10.1002/pssb.201200102

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

High-pressure infrared transmission measurements up to 9.5?GPa were carried out on the rotorstator molecular cocrystal C60 center dot C8H8. Helium served as pressure transmitting medium, which intercalates into the C60 center dot C8H8 lattice. Thus, we investigated the pressure effects and effect of intercalation of helium into the C60 center dot C8H8 lattice. The pressure-induced shift of the vibrational modes of C60 center dot C8H8 shows an anomaly around 3?GPa. This anomaly can be interpreted in terms of the orientational ordering transition of fullerene molecules accompanied by a change in the crystal symmetry, which causes the splitting of the vibrational modes. We compare the value of the critical pressure to that obtained earlier [Thirunavukkuarasu et al., J. Phys. Chem. C 112, 17525 (2008); Phys. Status Solidi B 244, 3857 (2007)]. (C) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2596 / 2599

页数：4

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