Magnetic permeability imaging of metals with a scanning near-field microwave microscope
Magnetic permeability imaging of metals with a scanning near-field microwave microscope
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DOI：
10.1063/1.1332978
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发表时间：
2000-12
影响因子：
4
通讯作者：
Sheng-Chiang Lee;C. P. Vlahacos;B. J. Feenstra;A. Schwartz;D. Steinhauer;F. Wellstood;S. Anlage
中科院分区：
文献类型：
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作者：
Sheng-Chiang Lee;C. P. Vlahacos;B. J. Feenstra;A. Schwartz;D. Steinhauer;F. Wellstood;S. Anlage
本文描述了一种扫描近场微波显微镜，该显微镜使用环形探针测量长度为200 μm的金属样品的局部磁性。我们通过空间分辨铁磁共振实验，在巨大磁阻材料La0.8Sr0.2MnO3的单晶上演示了6 GHz的成像。我们发现用一个简单的系统模型可以很好地描述实验结果的定性和定量。
We describe a scanning near-field microwave microscope which uses a loop probe to measure local magnetic properties of metallic samples on a length scale of 200 μm. We demonstrate imaging at 6 GHz through spatiallyresolved ferromagnetic resonance experiments on a single crystal of the colossal magneto-resistive material La0.8Sr0.2MnO3. We find the experimental results are qualitatively and quantitatively well described by a simple model of the system.