Texture and magnetic anisotropy of YBa2Cu3O7-x film on MgO substrate

Cornejo H.S.; De Los Santos Valladares L.; Barnes C.H.W.; Moreno N.O.; Domínguez A.B. · Journal of Materials Science: Materials in Electronics (2020) · DOI: 10.1007/s10854-020-04623-w

Resumen

The texture and magnetic anisotropy of a YBa2Cu3O7-x (YBCO) film growth onto a MgO substrate are analyzed in order to understand the relation between them. X-ray diffraction shows the presence of the (00l) reflections from the YBCO layer with a grain’s fraction value 98%. Rocking Curves (RC) measurements reveal an out-of-plane texture with a full width at the half maximum of 0.81°, revealing a high uniaxial texture in the YBCO film. The temperature dependence of the susceptibility measurements obtained under many applied fields along Hext ||c-axis and Hext||ab-plane reveals strong relationship between the uniaxial texture and the magnetic anisotropy, confirming the high ordering of the CuO2 superconducting planes. In addition, the critical current density values are obtained from the hysteresis loops and compared to similar YBCO films with uniaxial and biaxial texture reported elsewhere.

Instituciones: Universidad Nacional Mayor de San Marcos