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首页> 外文期刊>Zeitschrift fur Naturforschung. A, A journal of physical sciences >Moessbauer Spectroscopy Evidence for Phase Selectivity in Excimer Laser Induced Amorphization of Thermally Annealed FeCoBSi Metallic Glass
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Moessbauer Spectroscopy Evidence for Phase Selectivity in Excimer Laser Induced Amorphization of Thermally Annealed FeCoBSi Metallic Glass

机译：准分子激光诱导热退火FeCoBSi金属玻璃非晶化的相选择性的Moessbauer光谱证据

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Pulsed excimer laser irradiation effects (λ = 308 nm, τ = 10 ns, w = 3 J/cm~2, N = 2 laser pulses/ spot, repetition rate 1 Hz) on the magnetic properties and phase composition of thermally annealed Fe_(66)CO_(18)B_(15)Si_1 metallic glass have been studied by transmission and conversion electron Mossbauer spectroscopy (CEMS). Radiation-driven surface modifications were examined by scanning electron microscopy (SEM). Excimer laser induced amorphization was observed in partially crystallized Fe_(66)CO_(18)B_(15)Si_1 samples (T_A = 648 K, t_A = 1 hour) and was found to be accompanied by the development of laser-induced magnetic anisotropy. In totally crystallized Fe_(66)Co_(18)B_(15)Si_1 specimens (T_A = 723 K, t_A = 1 hour), the effect of excimer laser induced amorphization exhibited phase selectivity with respect to the crystalline components of the alloy system. When compared to bulk data, a different behavior of the surface magnetic texture and relative abundance of alloy phases was observed. The laser-induced phase transformation of thermally annealed Fe_(66)Co_(18)B_(15)Si_1 specimens was shown to consist of partial amorphization and surface oxidation of the irradiated material.
机译：脉冲准分子激光辐照对热退火Fe_（）的磁性和相组成的影响（λ= 308 nm，τ= 10 ns，w = 3 J / cm〜2，N = 2个激光脉冲/光斑，重复频率1 Hz）通过透射和转换电子莫斯鲍尔光谱法（CEMS）研究了66）CO_（18）B_（15）Si_1金属玻璃。辐射驱动的表面修饰通过扫描电子显微镜（SEM）进行检查。在部分结晶的Fe_（66）CO_（18）B_（15）Si_1样品中观察到准分子激光诱导的非晶化（T_A = 648 K，t_A = 1小时），并发现伴随着激光诱导的磁各向异性的发展。在完全结晶的Fe_（66）Co_（18）B_（15）Si_1样品（T_A = 723 K，t_A = 1小时）中，受激准分子激光诱导的非晶化作用相对于合金体系的晶体成分表现出相选择性。当与大量数据比较时，观察到表面磁织构和合金相的相对丰度的不同行为。热退火的Fe_（66）Co_（18）B_（15）Si_1样品的激光诱导相变表现为被辐照材料的部分非晶化和表面氧化。

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