Advantages of λ measurement in flat geometry high-Tc cuprates by an open-flat coil magnetometer demonstrating its wide possibilities for detection

S. Gevorgyan, T. Kiss, A. Movsisyan, H. Shirinyan, T. Ohyama, M. Takeo, T. Matsushita, K. Funaki

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


We developed an open-flat coil (OFC) preparation technology allowing creation of circular shape flat coils with high Q-factors. It enabled improving of an OFC magnetometer resolution up to Δλ to approximately 0.5 angstrom (Δλ/λ to approximately 3×10-7) at λ measurements in thin HTS at 30 MHz. This permitted to reach the sensitivity approximately 2×10-12 W/cm2 at detection of 0.63 μm laser radiation, which is better than the possibilities of the similar `screening' type detector based however, on square shape flat coils. Besides, the resolution approximately 30 nA/cm2 was registered at detection of the currents passing through the HTS thin films. We used this technique also to study the fine peculiarities of the vortex motion in high-Tc cuprates.

Original languageEnglish
Pages (from-to)471-475
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1
Publication statusPublished - Apr 7 2000
Event8th International Workshop on Low Temperature Detectors (LTD-8) - Dalfsen, Neth
Duration: Aug 15 1999Aug 20 1999

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation


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