Synthesis and superconductivity of organometallic fullerides M(3-n)(NR4)(n)C60, where M = K, Rb; R = H, D, Me, Et, Bu; n=1, 2, 3

被引：0
|
作者：
Kulbachinskii, V. A. [1 ]
Ezhikov, N. S. [1 ]
Lunin, R. A. [1 ]
Bulychev, B. M. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Low Temp Phys & Superconduct Dept, GSP 1, Moscow 119991, Russia
来源：
LOW TEMPERATURE PHYSICS | 2021年 / 47卷 / 01期
关键词：
isotope effect; organometallic fullerides; superconducting and structural properties; INTERCALATION COMPOUNDS; ELECTRONIC-PROPERTIES; ENERGY-SPECTRUM; ALKALI-METALS; GRAPHITE; HETEROFULLERIDES; TRANSITION; FULLERENE; COMPOUND; CESIUM;
D O I：
10.1063/10.0002896
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present experimental data on the synthesis and investigation of the superconducting and structural properties of organometallic fullerides M(3-n)(NR4)((n))C-60, where M = K, Rb; R = hydrogen H, deuterium D, methyl Me, ethyl Et, butyl Bu; n = 1, 2, 3, synthesized by exchange reactions of homofullerides of alkali metals of composition K3C60 and Rb3C60 with ammonium halides in the medium of absolute toluene or tetrahydrofuran (THF) at temperatures from 23 degrees C to 110 degrees C. We have studied also superconductivity in Rb2NH4C60 and Rb2ND4C60 samples with replacement of hydrogen for deuterium in ammonium, as well as in K2NH4C60 and K2ND4C60. The superconducting transition temperature did not change with replacement H by D within the measurement accuracy.
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页码：39 / 50
页数：12
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