,Electrical resistivity of a novel oxadiazole derivative as a function of pressure and temperature u

来源 :中国物理(英文版) | 被引量 : 0次 | 上传用户:yangjian1235
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The in-situ electrical resistance measurement on the microcrystal of 1,4-bis[(4-methyloxyphenyl)-1,3,4-oxadiazolyl]-2,5-bisheptyloxyphenylene (OXD-2) has been carried out under conditions of high pressure and temperatures higher than room temperature by using the diamond anvil cell (DAC). The sample’s resistivity was calculated with a finite element analysis method. The temperature and pressure dependencies of the resistivity of OXD-2 microcrystal were measured up to 150℃ and 16GPa. The resistivity of OXD-2 decreases with increasing temperature, indicating that OXD-2 exhibits organic-semiconductor conducting property in the region of experimental pressure. Between 90-100℃,the resistivity drops with the temperature, which reveals a temperature-induced phase transition. As the pressure increases, the resistivity of OXD-2 increases and reaches a maximum at about 6 GPa, and then begins to decrease at higher pressures. Combining the in-situ x-ray diffraction data with the resistivity measurement under pressure, the anomaly resistivity drop after 6 GPa is confirmed to be due to the pressure-induced amorphous phase transition of OXD-2.
其他文献
The chemisorption of one monolayer of Au atoms on an ideal Si(001) surface is studied by using the self-consistent tight binding linear muffin-tin orbital metho
Magnetism and magnetic entropy changes in LaFe11Al2Cx (x=0.0, 0.2 and 0.5) compounds have been investigated.The Curie temperature TC is conveniently controlled
光学天线作为空间激光通信系统中的核心组件,应具有较好的温度场稳定性和均匀性。较大的天线口径和地球静止轨道空间外热流的复杂聚变,增大了天线温度场热控技术的难度。根据
Er3+- and Er3+/Yb3+-doped lead germanate glasses that are suitable for use in fibre lasers and optical amplifiers as well as optical waveguide devices have been
This article presents numerical solutions of the periodic time-dependent Ginzburg-Landau model for the type-Ⅱsuperconductors by a finite-difference approximati
Nonlinear propagation of focused ultrasound in layered biological tissues is theoretically studied by using the angular spectrum approach (ASA), in which an aco
In this paper the SEIRS epidemic spread is analysed, and a two-dimensional probability cellular automata model for SEIRS is presented. Each cellular automation
We report on the magnetic properties and magnetocaloric effects of Mn5Ge3-xGax compounds with x=0.1, 0.2,0.3, 0.4, 0.6 and 0.9. All samples crystallize in the h
We propose a scheme to prepare Fock states for the vibrational motion of a trapped ion. Unlike previous schemes,the present scheme works in the mediate-excitati
“顾客是上帝”,这是商界颇有影响的口号。现在,报刊界也流行着一种提法:“满足读者需求”。办报刊,是给读者看的,必须充分考虑读者的需求,否则便无法在读者中立足,在群众中