The a.c. susceptibility third harmonic component of NdO1−0.14F0.14FeAs: A flux dynamic magnetic analysis |
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| Authors: | Daniele Di Gioacchino Augusto Marcelli Antonio Bianconi |
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| Affiliation: | a INFN-LNF, Via E. Fermi, 40-00044 Frascati, Rome, Italy
b University ‘La Sapienza’, Dipartimento di Fisica, P.le A. Moro, 4-00100 Rome, Italy |
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| Abstract: | In this contribution we present the analysis of the third harmonic susceptibility data of the new superconductor NdFeAs1−0.14F0.14. ‘Cole-Cole’ polar plots respect to the magnetic frequency of the exciting field are presented and discussed. Data show that NdFeAs1−0.14F0.14 exhibit a ‘bulk pinning’ with a 3D flux dynamic character. A comparison of the responses of high Tc materials and an evaluation of theoretical critical states is also presented. |
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| Keywords: | A. Superconductor D. Magnetic properties D. Phase transition |
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