Meyer–Neldel rule in amorphous strontium titanate thin films
Meyer–Neldel rule in amorphous strontium titanate thin films
复制标题
非晶钛酸锶薄膜中的迈耶-内德尔法则
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
H. Mabuchi
中科院分区：
文献类型：
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作者：
K. Morii;T. Matsui;H. Tsuda;H. Mabuchi
在这封信中，我们报告了实验结果，表明在300-470 K的温度范围内，无定形钛酸锶（a-STO）薄膜的电导率很好地符合Meyer-Neldel （MN）规则。这些薄膜是在两种不同的气氛中离子束溅射和退火的：真空和流动的氧气。根据不同的退火气氛，薄膜的MN图显示出两条平行的直线，真空退火和氧气退火薄膜的MN参数相同，分别为35 meV左右，电导率预因子分别为9.3×10−10和2.3×10−14（Ω cm）−1。
In this letter, we report the experimental result indicating that the electrical conductivity in thin films of amorphous strontium titanate (a-STO) is well fit to the Meyer–Neldel (MN) rule over the temperature range 300–470 K. The films were ion-beam sputtered and annealed in two different atmospheres: a vacuum and flowing oxygen. The MN plots for the films show two parallel straight lines depending on the annealing atmosphere, which give the identical MN parameters of about 35 meV with the conductivity prefactors of 9.3×10−10 and 2.3×10−14(Ω cm)−1 for the vacuum- and oxygen- annealed films, respectively.