Existence states of deuterium irradiated into LiAlO2
Existence states of deuterium irradiated into LiAlO2
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DOI：
10.1016/j.jnucmat.2007.01.280
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发表时间：
2008-01
影响因子：
3.1
通讯作者：
T. Luo;T. Oda;Y. Oya;Satoru Tanaka
中科院分区：
文献类型：
--
作者：
T. Luo;T. Oda;Y. Oya;Satoru Tanaka
利用原位红外吸收光谱分析了室温下3 keVD 2+辐照LiAlO 2时氘的存在状态。观察到与O-D伸缩振动相关的多个红外吸收峰，主要在2650 cm −1（O-Dα）、2600 cm −1（O-Dβ）和2500 cm −1（O-Dγ）处。O-Dα被指定为表面O-D。O-Dβ和O-Dγ被解释为三种候选者的两种不同的O-D状态：取代D+对Li+的O-D;取代D+对Al 3+的O-D;和间隙D+的O-D。O-Dβ是氘辐照LiAlO 2的主要O-D态，其稳定性高于O-Dγ。离子辐照后的加热导致D2的脱附和O-Dβ强度的增加，这意味着辐照到LiAlO 2中的部分氘以非O-D态存在，如被F心俘获的D−。
The existence states of deuterium in LiAlO2were analyzed by in situ IR absorption spectroscopy during irradiation with 3keV D2+at room temperature. Multiple IR absorption peaks that were related to O–D stretching vibrations were observed, mainly at 2650cm−1(O–Dα), 2600cm−1(O–Dβ), and 2500cm−1(O–Dγ). The O–Dαwas assigned to the surface O–D. The O–Dβand O–Dγwere interpreted as two distinct O–D states for three candidates: O–D of substitutional D+for Li+; O–D of substitutional D+for Al3+; and O–D of interstitial D+. O–Dβwas the dominant O–D state for deuterium irradiated into LiAlO2, and had higher stability than O–Dγ. Heating after ion irradiation led to the desorption of D2and an increase in the intensity of O–Dβ, which implies that some of the deuterium irradiated into LiAlO2exists in non-O–D states, such as D−captured by F centers.