摩星石(Moissanite)為六方晶系的碳化矽(SiC)，其硬度(H=9.5)僅次於鑽石，且擁有極佳的導熱性，適合當作高壓砧的砧面。
摩星石高壓砧(Moissanite Anvil Cell, MAC)可以達到的壓力極值為50GPa，配合靜態加溫法，其溫度可達1500℃以上。由於使用鑽石砧無法精確地量測到鑽石振動模在高溫高壓下之變化情形，因此我們利用MAC，分別量測溫度與壓力對鑽石拉曼振動模頻率之影響。此外我們也用鑽石高壓砧進行摩星石在高溫高壓環境之下其拉曼振動模頻率之變化。將實驗結果加以計算，求出Grüneisen parameters並比較之。
鑽石在常溫常壓下之拉曼振動模為1333cm-1，在溫度與壓力分別達1400℃與8GPa之狀態下，鑽石的拉曼振動模波數（wavenumber)隨溫度向低頻移動，拉曼峰由1333㎝-1遞減至1296㎝-1，減少近37 cm-1；而隨壓力向高頻移動，壓力從0GPa到8GPa，鑽石的拉曼峰從1332㎝-1增加到1359㎝-1，上升了約26 cm-1。根據 計算Gruneisen parameters ( )，所得的結果為1.08。
摩星石有三個較強之拉曼峰，位置約在766cm-1、788cm-1和969cm-1，當溫度上升至900℃，三個峰值分別下降至約745cm-1、765cm-1及938cm-1，總共分別下降約20、22與27 cm-1；而當壓力上升至19GPa時，摩星石的拉曼峰值從766cm-1、788cm-1和969cm-1升為832cm-1、845cm-1和1044 cm-1，因此當壓力從0至19GPa，摩星石的拉曼峰值上升分別約66、57和75 cm-1。 ，所以 分別為1.02、0.85和0.91。
所以如將MAC加以改良，可望同時使其最高壓力與溫度達到10GPa及1500℃，此條件相當於地球內部過渡帶之環境。

Hexagonal form of SiC, moissanite, is a strong material with superb heat conductivity that is suitable for serving as anvils in the gem anvil cells. The moissanite anvil cell (MAC) has the capability of generating pressure up to 50 GPa and temperature up to 1500℃, separately. It is feasible that simultaneous high pressure and temperature can be obtained at 10 GPa at maximum temperature of 1500℃ in the MAC. In this experiment, the frequency shifts of diamond Raman mode with temperature and pressure has been conducted in the MAC up to 1200K and 10 GPa, respectively. Potential applications of MAC to the investigation of the Earth's transition zone are currently undergoing.

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