Phase transformations of fullerene C70 with metals at high temperatures and pressure

被引：5

作者：

Blanter, Mikhail S. ^{[1
]}

Borisova, Polina A. ^{[2
]}

Brazhkin, Vadim V. ^{[3
]}

Lyapin, Sergey G. ^{[3
]}

Filonenko, Vladimir P. ^{[3
]}

机构：

[1] MIREA Russian Technol Univ, Moscow, Russia

[2] Natl Res Ctr, Kurchatov Inst, Moscow, Russia

[3] Russian Acad Sci, Inst High Pressure Phys, Troitsk, Russia

来源：

MATERIALS LETTERS | 2020年 / 277卷

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

Phase transformations; Fullerene C-70; Neutron diffraction; Raman spectroscopy; High pressure; High temperature;

D O I：

10.1016/j.matlet.2020.128307

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using neutron diffraction and Raman spectroscopy, it was shown that the introduction of 7 at.% Al or Fe into crystalline fullerene C-70 significantly increases its stability against transformation to disordered (amorphous-like) graphite when heated at temperatures of 500-1100 degrees C and a pressure of 2-8 GPa. In amorphous-like fullerene C-70, this effect is absent. An explanation is proposed based on the known data on increasing stability of fullerene molecules when placing metal atoms inside or outside of the fullerene cage. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：3

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