铽镓石榴石晶体多晶合成与单晶生长研究

Piezoelectrics & Acoustooptics(2016)

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Abstract
以(99.99%)Ga2O3和Tb4O7为原料,按照化学计量比并适当富镓配料,采用固相反应法(分段升温工艺)合成高纯、单相的铽镓石榴石(Tb3Ga5O12,简称TGG)多晶料.使用提拉法(CZ)成功生长出(φ)44 mm×70 mm,外观完整无开裂、无螺旋的TGG晶体.经X线衍射分析、密度测试、晶体成分测试表明,生长的晶体结构完整,结晶性好;晶体的密度为7.14 g/cm3,与理论值接近;晶体中Tb与Ga摩尔比为66%,可能存在少量Ga空位.
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