光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年
1期
87-91
,共5页
高压%黄铜矿%拉曼光谱%金刚石压腔
高壓%黃銅礦%拉曼光譜%金剛石壓腔
고압%황동광%랍만광보%금강석압강
High pressure%Chalcopyrite%Raman spectra%Diamond anvil cell
实验利用金刚石压腔装置研究了常温和0.1～1400 M Pa范围内黄铜矿A1振动模式的原位拉曼光谱特征。结果显示在实验条件范围内，该拉曼振动峰的强度和形态保持稳定，表明晶格内Cu-S和Fe-S间的相互作用没有发生质变。实验发现黄铜矿该拉曼振动的波数随着压力升高连续向高频方向移动，两者的线性关系为：ν290＝0.0312p＋290.60（0.1≤ p＜58.8 MPa）和ν290＝0.00572p＋292.10（58.8≤ p＜1400 MPa） dν/d p。常温下58.8 M Pa是黄铜矿该拉曼波数随压力变化率的一个突变点，低于和高于该压力时分别为31.2和5.72 cm -1· GPa-1，显著的差异表明黄铜矿的结构可能发生了某种改变。
實驗利用金剛石壓腔裝置研究瞭常溫和0.1～1400 M Pa範圍內黃銅礦A1振動模式的原位拉曼光譜特徵。結果顯示在實驗條件範圍內，該拉曼振動峰的彊度和形態保持穩定，錶明晶格內Cu-S和Fe-S間的相互作用沒有髮生質變。實驗髮現黃銅礦該拉曼振動的波數隨著壓力升高連續嚮高頻方嚮移動，兩者的線性關繫為：ν290＝0.0312p＋290.60（0.1≤ p＜58.8 MPa）和ν290＝0.00572p＋292.10（58.8≤ p＜1400 MPa） dν/d p。常溫下58.8 M Pa是黃銅礦該拉曼波數隨壓力變化率的一箇突變點，低于和高于該壓力時分彆為31.2和5.72 cm -1· GPa-1，顯著的差異錶明黃銅礦的結構可能髮生瞭某種改變。
실험이용금강석압강장치연구료상온화0.1～1400 M Pa범위내황동광A1진동모식적원위랍만광보특정。결과현시재실험조건범위내，해랍만진동봉적강도화형태보지은정，표명정격내Cu-S화Fe-S간적상호작용몰유발생질변。실험발현황동광해랍만진동적파수수착압력승고련속향고빈방향이동，량자적선성관계위：ν290＝0.0312p＋290.60（0.1≤ p＜58.8 MPa）화ν290＝0.00572p＋292.10（58.8≤ p＜1400 MPa） dν/d p。상온하58.8 M Pa시황동광해랍만파수수압력변화솔적일개돌변점，저우화고우해압력시분별위31.2화5.72 cm -1· GPa-1，현저적차이표명황동광적결구가능발생료모충개변。
The variation characters of the A1 mode Raman spectra of chalcopyrite under 0.1~1 400 MPa and ambient tempera-ture were researched using diamond anvil cell .The results show that the shape and intensity of the Raman peak remains constant under experimental conditions ,indicating that the chemical bounds of Cu-S and Fe-S remain unchanged .The authors have also noticed that the position of the Raman peak shifts to higher frequency with increasing pressure ,which could be described as :ν290=0.031 2p+290.60(0.1≤ p<58.8 MPa) andν290 =0.005 72p+292.10(58.8≤ p<1 400 MPa) .The rate of the Raman peak shifting with increasing pressure changed abruptly at about 58.8 MPa ,the dν/dp is 31.2 and 5.72 cm -1 · GPa-1 below and a-bove 58.8 MPa respectively ,which perhaps indicate that some structural changes occurred in the chalcopyrite .
