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在激光功率为40—160W、扫描速度为10mm/s、激光光斑为20mm照射条件下,用CO 2激 光辐照非晶Fe73.5Cu1Nb3Si13.5B9产生微量晶化.利用透射穆斯堡尔谱 （TMS）技术分析了原始态和晶化后样品的超精细结构.确定了穆斯堡尔谱的基本参数——化 学位移(IS)、四极分裂(QS)、内磁场(Hhf)随激光功率变化的规律.分析表明，CO2
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关键词:
- 激光辐照 /
- 微量晶化 /
- 非晶Fe73.5Cu1Nb3 Si13.5B9 /
- 穆斯堡尔谱
Microcrystalline phases were produced by laser irradiation on the Fe73.5Cu1Nb3Si13.5B9 amorphous ribbon with a power ranging from 40 to 170W,scaning speed 10mm/s,laser beam spot 20mm. Hyperfine structures of the original and crystallized samples were analyzed by transmission Mssbauer spectros copy. We discovered that the basic parameters of the Mssbauer spectra——isome r shift（IS）, quadrupole splitting（QS） and hyperfine magnetic field（Hhf） ch ange with the laser power. Experimental results show that the magnetic moment re organization of Fe73.5Cu1Nb3Si13.5 B9 amorphous phases has take n place and the atom magnetic moment direction maintains a preferred in-plane or ientation, The average hyperfine magnetic field of the amorphous phase is improv ed because of the microcrystalline phase. The crystallized phase was Fe-Si alloy with a DO3 structure, and the area of its spectral lines is about 2% —3.4%. This is caused by the jump of one electron in Fe atom 3d6 shell int o Si atom 3p2 shell, forming a stability electron group.-
Keywords:
- laser irradiation /
- microcrystallization /
- amorphous Fe73.5 Cu1Nb3Si13.5B9 /
- Mssbauer spectrosc opy
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物理学报. 2003, 52(10): 2486-2491.
doi: 10.7498/aps.52.2486.
激光辐照非晶Fe73.5Cu1Nb3Si13.5B 9微量晶化的穆斯堡尔谱研究
- 收稿日期: 2002-12-24
- 修回日期: 2003-02-10
- 刊出日期: 2003-05-05
摘要: 在激光功率为40—160W、扫描速度为10mm/s、激光光斑为20mm照射条件下,用CO 2激 光辐照非晶Fe73.5Cu1Nb3Si13.5B9产生微量晶化.利用透射穆斯堡尔谱 （TMS）技术分析了原始态和晶化后样品的超精细结构.确定了穆斯堡尔谱的基本参数——化 学位移(IS)、四极分裂(QS)、内磁场(Hhf)随激光功率变化的规律.分析表明，CO2
-
关键词:
- 激光辐照 /
- 微量晶化 /
- 非晶Fe73.5Cu1Nb3 Si13.5B9 /
- 穆斯堡尔谱
English Abstract
A study of Mssbauer spectroscopy of microcrystallization of amorphous Fe7 3.5Cu1Nb3Si13.5B9 irradiated b y a CO2-Laser
- Received Date:
24 December 2002
- Accepted Date:
10 February 2003
- Published Online:
05 May 2003
Abstract: Microcrystalline phases were produced by laser irradiation on the Fe73.5Cu1Nb3Si13.5B9 amorphous ribbon with a power ranging from 40 to 170W,scaning speed 10mm/s,laser beam spot 20mm. Hyperfine structures of the original and crystallized samples were analyzed by transmission Mssbauer spectros copy. We discovered that the basic parameters of the Mssbauer spectra——isome r shift（IS）, quadrupole splitting（QS） and hyperfine magnetic field（Hhf） ch ange with the laser power. Experimental results show that the magnetic moment re organization of Fe73.5Cu1Nb3Si13.5 B9 amorphous phases has take n place and the atom magnetic moment direction maintains a preferred in-plane or ientation, The average hyperfine magnetic field of the amorphous phase is improv ed because of the microcrystalline phase. The crystallized phase was Fe-Si alloy with a DO3 structure, and the area of its spectral lines is about 2% —3.4%. This is caused by the jump of one electron in Fe atom 3d6 shell int o Si atom 3p2 shell, forming a stability electron group.
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