Structural and magneto-optical properties of ferric oxide quantum dots embedded phosphate glass
Structural and magneto-optical properties of ferric oxide quantum dots embedded phosphate glass
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嵌入磷酸盐玻璃的氧化铁量子点的结构和磁光性质
DOI：
10.1016/j.ceramint.2017.10.104
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发表时间：
2018-02
影响因子：
5.2
通讯作者：
Anxian Lu
中科院分区：
文献类型：
--
作者：
Jingbo Yu;Qian Zhang;Yi Gu;Anxian Lu
采用传统的熔体淬冷技术制备了嵌入Fe 2 O3量子点的磷酸盐玻璃，并对其进行了热处理。研究了Fe 2 O3含量对薄膜结构、光学和磁光性能的影响。结果表明，Fe 2 O3的加入对主体玻璃的结构单元和玻璃的非晶性质没有明显影响。在玻璃基体中，通过高分辨透射电子显微镜证实了Fe 2 O3量子点的存在。同时，光学研究清楚地表明了尺寸量子化效应导致的光学截止波长的红移。在含有1mol%Fe_2O_3的玻璃中测得最高的费尔德常数（22.33°/T-cm），是玻璃基体的约7倍。随着Fe_2O_3含量的增加，由于Ostwald熟化效应，Fe_2O_3量子点由非晶相向γ-Fe_2O_3相转变。有趣的是，沿着Fe 2 O3量子点的相演化，观察到了Verdet常数的浓度猝灭现象.当Fe 2 O3含量达到2mol%时，玻璃表现出顺磁性，费尔德常数为− 2.833°/T-cm。这一发现为量子点嵌入磁光玻璃的发展提供了新的思路。
In this study, phosphate glasses embedded with Fe2O3quantum dots were prepared via a conventional melt quenching technology with further heat treatment. The effect of Fe2O3content on the structural, optical and magneto-optical properties was investigated. The results showed that the addition of Fe2O3had no obvious influence on the structure units that built up the host glass and the amorphous nature of glass. In the glass matrix, the existence of Fe2O3quantum dots was confirmed by high resolution transmission electron microscope. Meanwhile, optical study clearly demonstrated a red shift in optical cut-off wavelength resulted from the size quantization effect. The highest Verdet constant (22.33°/T-cm) was measured for the glass containing 1 mol% Fe2O3, which was ~ 7 times higher than that of the glass matrix. As the increment of Fe2O3contents, a phase evolution of Fe2O3quantum dots from amorphous phase to γ-Fe2O3phase was recorded due to the Ostwald Ripening effect. Interestingly, a concentration quenching phenomenon in Verdet constant was observed along with the phase evolution of Fe2O3quantum dots. When the content of Fe2O3is up to 2 mol%, the glass exhibited paramagnetism with the Verdet constant of − 2.833°/T-cm. This finding can provide a new idea for the development of quantum dot embedded magneto-optical glass.
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影响因子：
2.8
作者：
C. Loong;K. Suzuya;D. Price;B. Sales;L. Boatner
通讯作者：
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影响因子：
2.4
作者：
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3.5
作者：
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3.5
作者：
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通讯作者：
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影响因子：
4.6
作者：
N. S. Hussain;M. Lopes;J. Santos
通讯作者：
N. S. Hussain;M. Lopes;J. Santos