In situ X-ray diffraction of natural chromium-bearing spinel under high pressure and high temperature conditions

MA Maining~

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In situ X-ray diffraction of natural chromium-bearing spinel under high pressure and high temperature conditions

更新时间：2021-03-12

- In situ X-ray diffraction of natural chromium-bearing spinel under high pressure and high temperature conditions
- NUCLEAR TECHNIQUES Issue 12, (2004)
- 作者机构：
  
  1. 中国科学院高能物理研究所
  2. 中国科学院地球化学研究所
  3. 中国科学院高能物理研究所北京 100049 中国科学院研究生院,北京,100049
  4. ,贵阳,550002
- 作者简介：
- 基金信息：
  
  中国科学院知识创新项目(KJCX2-SW-N03);国家自然科学基金(40304005);基金重大项目(10299040)
- DOI：
  CLC： O521;P573
- Published：01 December 2004
- 稿件说明：
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[1]马麦宁,刘景,周文戈,李延春,李晓东.高温高压条件下天然含Cr尖晶石的原位X衍射[J].核技术,2004(12):931-934.

MA Maining~. In situ X-ray diffraction of natural chromium-bearing spinel under high pressure and high temperature conditions[J]. Nuclear techniques, 2004, (12): 931-934.
[1]马麦宁,刘景,周文戈,李延春,李晓东.高温高压条件下天然含Cr尖晶石的原位X衍射[J].核技术,2004(12):931-934. DOI：

MA Maining~. In situ X-ray diffraction of natural chromium-bearing spinel under high pressure and high temperature conditions[J]. Nuclear techniques, 2004, (12): 931-934. DOI：

摘要

对天然含Cr尖晶石

在T=300—603K

P=0—12.82GPa条件下

在中国科学院高能物理研究所同步辐射实验室高压站

利用外加温金刚石压腔装置（DAC）

进行了能量色散X射线粉末衍射（EDXD）原位测量

获得了天然含Cr尖晶石随压力和温度变化的衍射图谱。通过指标化公式对衍射图谱进行分析

得到了尖晶石的晶胞参数及其随压力、温度的变化

进而利用Mumaghan方程得到P-V状态方程和体积模量、压缩系数及热膨胀系数等。

Abstract

Energy dispersive X-ray powder diffraction （EDXD） of natural chromium-bearing spinel collected from Damapin using synchrotron radiation has been in situ measured under high pressure（0—12.82 GPa） and high temperature （300—603 K） conditions. Based on Mumaghan equation

the state equation of natural chromium-bearing spinel was deduced

the bulk modulus K

（0）=369 Gpa and compression coefficient K=2.713×10

-3

/Gpa were obtained. In addition

the thermal expansion of spinel was discused

and a thermal expansion coefficient of α=1.004×10

-5

/K was calculated.

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