Model Fitting of bulk GdBa₂Cu₃O_7−δ sample at the imaginary component of AC magnetic susceptibility

Authors

Shielo Namuco National Institute of Physics, University of the Philippines Diliman
Roland Sarmago National Institute of Physics, University of the Philippines Diliman

Abstract

Magnetic superconducting properties of GdBa₂Cu₃O_7−δ (GdBCO) were investigated using complex magnetic susceptibility measurements. Interesting behavior in the intragrain and intergrain responses are observed at varying AC and DC field strengths. For AC susceptibility measurements, results show that the presence of the intragranular peak depends on the strength of the applied field. Increasing the induced AC magnetic field, the intergranular peak moves to lower temperatures and broadening is observed. A non vortex model used in YBCO and MgB₂ is used to fit the imaginary component of the susceptibility. The model fit results show that the behavior in χ'' is due to the intergrain resistance occuring when grains start to couple. The morphology of the grains plays an important role in the study of AC magnetic susceptibility.

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Issue

2012: Proceedings of the 30th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP2012-PB-7

Section

Poster Session PB

Published

2012-10-22

How to Cite

[1]

S Namuco and R Sarmago, Model Fitting of bulk GdBa2Cu3O7−δ sample at the imaginary component of AC magnetic susceptibility, Proceedings of the Samahang Pisika ng Pilipinas 30, SPP2012-PB-7 (2012). URL: https://proceedings.spp-online.org/article/view/SPP2012-PB-7.