Observation of Vortex Movements in a Bi2212 Single Crystal under Application of a Transport Current by means of the Bitter Pattern Technique

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概要

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• The high-resolution Bitter pattern technique has been used to observe vortex movements of Bi_2Sr_2CaCu_2O_y single crystals. A transport current is applied to the sample parallel to the ab plane, and a dc magnetic field is applied normal to the ab plane at the Ni decoration. The Ni decoration pattern can be observed using a scanning electron microscope (SEM) and an atomic force microscope (AFM). Through observation of the Ni pattern, we can identify vortex movements while the transport current is being applied. The vortices move randomly with a small transport current of less than 40% of J_c, and they move in a line with a large transport current nearly equal to J_c. The vortex movement was not observed in the sample on applying a transport current larger than 1.5 J_c.

• 社団法人応用物理学会の論文
• 1998-04-01

著者

• OHSHIMA Shigetoshi

  Department of Gastroenterology, Akita University School of Medicine

• KOSEKI Takahiro

  Department of Mechanical Engineering, Graduate School of Science and Technology, Nihon University

• KAMIMURA Akira

  Department of Internal Medicine, Koseiren Sanjo General Hospital

• Koseki Takahiro

  Department Of Electrical And Information Engineering Yamagata University

• Ohshima Shigetoshi

  Department Of Electrical And Information Engineering Yamagata University

• Ohshima Shigetoshi

  Department Of Electrical And Information Engineering Faculty Of Engineering Yamagata University

• Kamimura Akira

  Department Of Electrical And Information Engineering Yamagata University

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