STUDY OF FINE PECULIARITIES OF HEAT CAPACITY IN YBa$_2$Cu$_3$O$_y$ FILMS BY MEANS OF THE LASER-COUPLED FLAT-COIL-OSCILLATOR

Authors

  • S.G. Gevorgyan Center on Superconductivity & Scientific Instrumentation, Chair of Solid State Physics, YSU, Institute for Physical Research, NAS, Armenia
  • G.H. Karapetyan Center on Superconductivity & Scientific Instrumentation, Chair of Solid State Physics, YSU, Institute for Physical Research, NAS, Armenia
  • H.G. Shirinyan Institute for Physical Research, NAS, Armenia
  • S.T. Muradyan Center on Superconductivity & Scientific Instrumentation, Chair of Solid State Physics, YSU, Russian-Armenian (Slavonic) State University, Armenia
  • G.S. Gevorgyan Center on Superconductivity & Scientific Instrumentation, Chair of Solid State Physics, Chair of Optics, YSU, Armenia
  • B.K. Kurghinyan Center on Superconductivity & Scientific Instrumentation, Chair of Solid State Physics, YSU, Armenia
  • V.S. Gevorgyan Center on Superconductivity & Scientific Instrumentation, Chair of Solid State Physics, YSU, Institute for Physical Research, NAS, Armenia
  • A.A. Polyanskii Applied Superconductivity Center, National High Magnetic Field Laboratory, 2031 East Paul Dirac Drive, Tallahassee, FL 32310, USA

DOI:

https://doi.org/10.46991/PYSU:A/2011.45.1.049

Keywords:

Cryogenic laser scanning microscope (CLSM), imaging technique, heat capacity of YBa$_2$Cu$_3$O$_y$ film, high-$T_c$ superconductive (HTS) & low-$T_c$ superconductive (LTS) materials, normal-to-superconductive (N/S) phase transition, single-layer flat-coil-oscillator test-method (SFCO-technique)

Abstract

Improvements in the “hybrid” imaging method, based on traditional Laser Scanning Microscopy in combination with the single-layer flat-coil-oscillator (SFCO) sensitive technique introduced by authors earlier, are discussed. This method is capable of imaging 2D-grained structure, as well as the normal-to-superconductive phase transition in flat thin high-Tc superconductive materials with 1–2 μm spatial resolution. It enabled to detect weakly expressed peculiarities of the heat capacity in YBa2Cu3Oy film (preceding the well-known specific heat “jump”), which are important for true understanding of the real nature of superconductivity phenomenon. The method uses a well-focused He-Ne laser beam as a probing signal, and the SFCO-technique as a high-resolution sensing tool.

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Published

2011-02-16

How to Cite

Gevorgyan, S., Karapetyan, G., Shirinyan, H., Muradyan, S., Gevorgyan, G., Kurghinyan, B., … Polyanskii, A. (2011). STUDY OF FINE PECULIARITIES OF HEAT CAPACITY IN YBa$_2$Cu$_3$O$_y$ FILMS BY MEANS OF THE LASER-COUPLED FLAT-COIL-OSCILLATOR. Proceedings of the YSU A: Physical and Mathematical Sciences, 45(1 (224), 49–54. https://doi.org/10.46991/PYSU:A/2011.45.1.049

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Section

Physics