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首页> 外文期刊>Quantum Beam Science >Simulation of Two-Dimensional Images for Ion-Irradiation Induced Change in Lattice Structures and Magnetic States in Oxides by Using Monte Carlo Method
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Simulation of Two-Dimensional Images for Ion-Irradiation Induced Change in Lattice Structures and Magnetic States in Oxides by Using Monte Carlo Method

机译：用蒙特卡罗法测定离子辐射诱导晶格结构和磁力态磁态变化的二维图像

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A Monte Carlo method was used to simulate the two-dimensional images of ion-irradiation-induced change in lattice structures and magnetic states in oxides. Under the assumption that the lattice structures and the magnetic states are modified only inside the narrow one-dimensional region along the ion beam path (the ion track), and that such modifications are affected by ion track overlapping, the exposure of oxide targets to spatially random ion impacts was simulated by the Monte Carlo method. Through the Monte Carlo method, the evolutions of the two-dimensional images for the amorphization of TiO2, the lattice structure transformation of ZrO2, and the transition of magnetic states of CeO2 were simulated as a function of ion fluence. The total fractions of the modified areas were calculated from the two-dimensional images. They agree well with the experimental results and those estimated by using the Poisson distribution functions.
机译：Monte Carlo方法用于模拟氧化物中晶格结构和磁性状态的离子照射诱导的变化的二维图像。 在沿离子束路径（离子轨道）仅在窄的一维区域内仅修改晶格结构和磁力状态，并且这种修改受离子轨道重叠的影响，氧化物目标在空间上曝光 蒙特卡罗方法模拟了随机离子撞击。 通过蒙特卡罗方法，模拟了TiO2的三维图像的二维图像的演变，ZrO2的晶格结构转化和CeO2的磁性状态的转变。 从二维图像计算修改区域的总级分。 他们对实验结果吻合良好，并通过使用泊松分布函数估计的那些。

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