Magnetic properties of cobalt microwires measured by piezoresistive cantilever magnetometry
Magnetic properties of cobalt microwires measured by piezoresistive cantilever magnetometry
复制标题
压阻悬臂梁磁力测量钴微丝的磁性
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J. Bausells
中科院分区：
文献类型：
--
作者：
G. Tosolini;J. Michalik;R. Córdoba;J. D. de Teresa;F. Pérez;J. Bausells
摘要本文介绍了聚焦电子束诱导沉积（FEBID）生长的钴丝的磁性特征，并利用静态压阻悬臂式磁强计对其进行了研究。我们已经使用了先前开发的高力敏亚微米厚硅压阻悬臂梁。利用双梁设备在悬臂梁的自由端生长出高质量的多晶钴微丝。在存在外部磁场的情况下，磁性钴线被磁化，这导致了依赖于磁场的悬臂梁的静态偏转。我们证明了悬臂梁的压阻信号，对应于大约1nn的最大力，可以作为外加磁场的函数来测量，在室温下具有良好的信噪比。结果突出了FEBID技术在特定基板上生长磁性结构的灵活性，在这种情况下是压阻悬臂。
Abstract We present the magnetic characterization of cobalt wires grown by focused electron beam-induced deposition (FEBID) and studied using static piezoresistive cantilever magnetometry. We have used previously developed high force sensitive submicron-thick silicon piezoresistive cantilevers. High quality polycrystalline cobalt microwires have been grown by FEBID onto the free end of the cantilevers using dual beam equipment. In the presence of an external magnetic field, the magnetic cobalt wires become magnetized, which leads to the magnetic field dependent static deflection of the cantilevers. We show that the piezoresistive signal from the cantilevers, corresponding to a maximum force of about 1 nN, can be measured as a function of the applied magnetic field with a good signal to noise ratio at room temperature. The results highlight the flexibility of the FEBID technique for the growth of magnetic structures on specific substrates, in this case piezoresistive cantilevers.