Solution Growth and Optical Characterization of β-FeSi2 Bulk Crystals
Solution Growth and Optical Characterization of β-FeSi2 Bulk Crystals
复制标题
β-FeSi2 块状晶体的溶液生长和光学表征
DOI：
10.1143/jjap.41.l583
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发表时间：
2002
影响因子：
1.5
通讯作者：
I. Kikuma
中科院分区：
文献类型：
--
作者：
H. Udono;I. Kikuma
利用碳板，采用温度梯度溶液生长的方法，成功地生长出了直径10 mm、厚度0.3 ~ 0.5 mm的大尺寸β-FeSi2晶体。生长的晶体具有较大的晶界，面积约为（1-2）×（1-4） mm2。光学吸收测量在室温下进行单晶样品从生长的晶体制备。吸收光谱表明β-FeSi2具有间接带隙结构，隙能约为0.75 eV。
We have succeeded in growing large-sized β-FeSi2 crystal (10 mm in diameter and 0.3–0.5 mm in thickness) by a temperature gradient solution growth method using a carbon plate. The grown crystals had large-sized grain boundaries with an area of about (1–2)×(1–4) mm2. Optical absorption measurements were performed at room temperature on single crystalline specimens prepared from the grown crystals. The absorption spectra suggest that β-FeSi2 has an indirect band-gap structure with a gap energy of approximately 0.75 eV.