In April 2011 took place in the world’s first 100 years of the discovery of superconductivity. Super- conductivity has been the focus of fundamental solid state physics, applied sciences and engineering. Today it is possible to use superconducting materials in a first generation of superconducting devices and in the near future in magnetically levitated trains, superconducting wires, quantum computers, new generation mobile phones, new MRI equipment, etc. The group of superconducting ceramic oxide materials belonging to the UNMSM have studied with great interest the YBa2 Cu3 O7 superconducting material, investigating the incorporation of different cations and anions in different atomic sites in the YBa2 Cu3 O7 structure, as well as derivatives of this structure, to understand their structural, chemical and superconducting properties, then proposing new superconducting compounds. We cel...

The route by chemical solution deposition to grow textured layers of oxide superconductors has received the most scientific attention over the past two decades. Texture plays a predominant role in the technological applications of superconducting layers. We crystallized a precursor solution of Y, Ba and Cu acetates onto single crystal substrates of perovskite structure by the route of chemical solution deposition and we obtained textured superconducting layers of YBa2Cu3O7. We divided our results in two parts: a) We review the epitaxial growth of YBa2Cu3O7 superconducting layers through physical and chemical methods, and b) We study mainly the epitaxial growth of YBa2Cu3O7 superconducting layers by X ray diffraction.

This work was supported by the National Research Foundation of President Post-doctoral fellowship Program (NRF-2013R1A6A3A060443). L. De Los Santos Valladares thanks the Incorporacion de Investigadores Program from the CONCYTEC - World Bank - UNMSM (Contrat No. 12 -2019 - FONDECYT - BM - INC. INV.) for supporting his research at the University of San Marcos, Peru.

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

This work was supported by the Proyectos Integrales Program from the CONCYTEC agency, project title “Fabricacion de placas superconductoras de YBaCuO” (Contract No. 018 -2020 – FONDECYT – BM). A Bustamante Domínguez and A. Osorio Anaya thank the Vice-Rector Office for Research and Postgraduate from the Universidad Nacional Mayor de San Marcos for supporting their projects B151301031 and B171301856 . 2 3 7

In this study, we determined the crystallographic, magnetization and electrical resistivity properties of a EuFe0.5Mn0.5O3 complex perovskite produced using a combustion synthesis method. The sample crystallized as an orthorhombic perovskite belonging to the Pbnm space group. Magnetization measurements indicated spin reorientation at 206 K and weak ferromagnetic-like ordering at low temperatures. Determining the magnetization as a function of the magnetic field demonstrated the presence of magnetic order, even at room temperature. Resistivity measurements indicated the existence of a small polaron conduction mechanism at high temperature. © 2020