Article
Engineering, Electrical & Electronic
Tomoya Horide, Yuga Yoshida, Ryusuke Kita, Masaya Gondo, Manabu Ishimaru, Kaname Matsumoto
Summary: In this study, a double perovskite oxide was incorporated in YBa2Cu3O7 films to control the nanocomposite structure, resulting in high performance superconducting films. The formation of elongated nanorods and the site occupancy of the RE element greatly influenced the Jc characteristics, leading to unconventional phenomena.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Pau Ternero, Jordi Alcala, Laura Piperno, Cornelia Pop, Susagna Ricart, Narcis Mestres, Xavier Obradors, Teresa Puig, Giovanni Sotgiu, Giuseppe Celentano, Anna Palau
Summary: High-performing superconducting YBa2Cu3O7-x (YBCO) films are fabricated using a novel chemical solution deposition method with barium-deficient low-fluorine solutions, allowing for a reduced growth temperature of 750 degrees C. Investigations into the influence of growing temperatures on the microstructure and superconducting properties of YBCO films show an improved performance at lower temperatures.
Article
Chemistry, Multidisciplinary
Ion Ivan, Alina M. Ionescu, Daniel N. Crisan, Andreea Andrei, Armando Galluzzi, Massimiliano Polichetti, Jesus Mosqueira, Adrian Crisan
Summary: By studying self-assembled defects as effective pinning centers and estimating frequency-dependent critical current densities using frequency-dependent AC susceptibility measurements, high critical currents were achieved in high-temperature superconductors.
Review
Chemistry, Multidisciplinary
Jian Zhang, Haiyan Wu, Guangzhen Zhao, Lu Han, Jun Zhang
Summary: This review provides an overview of recent progress in enhancing superconductivity by introducing nanoscale vortex pinning centers, focusing on the comprehensive control of morphology, dimension, orientation, and concentration of artificial pinning centers (APCs) and the principle of vortex pinning. The literature suggests that HTSs with the best superconductivity can be obtained when one-dimensional (1D) and three-dimensional (3D) nanoscale APCs are combined for vortex pinning.
Article
Physics, Applied
Jordi Alcala, Pau Ternero, Cornelia Pop, Laura Piperno, Susagna Ricart, Narcis Mestres, Teresa Puig, Xavier Obradors, Alexander Meledin, Giuseppe Celentano, Anna Palau
Summary: Cuprate coated conductors show superior performance compared to other superconductors and can be used in large-scale applications. By tuning the growth temperature, it is possible to effectively control the vortex pinning characteristics without the need for artificial pinning sites. Samples grown at an optimized temperature of 750 degrees Celsius exhibit high critical current densities in self-field conditions, indicating improved superconducting performance.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Lucas Backmeister, Bernd Aichner, Max Karrer, Katja Wurster, Reinhold Kleiner, Edward Goldobin, Dieter Koelle, Wolfgang Lang
Summary: The defect-rich morphology of YBCO thin films leads to the formation of a vortex glass, which consists of entangled vortex lines. Stratification of the vortex lines through specific defects results in the formation of an ordered glass structure.
Article
Nanoscience & Nanotechnology
Lavinia Saltarelli, Kapil Gupta, Silvia Rasi, Aiswarya Kethamkuzhi, Albert Queralto, Diana Garcia, Joffre Gutierrez, Jordi Farjas, Pere Roura-Grabulosa, Susagna Ricart, Xavier Obradors, Teresa Puig
Summary: Research on developing alternative energy sources has become necessary due to global warming. Superconductivity is a promising solution to enhance clean electrical energy, if production costs can be reduced. This study presents a versatile and tunable solution method for preparing high-performance epitaxial cuprate superconducting films using chemical solution deposition techniques. The study focuses on the transient liquid-assisted growth (TLAG) process, which offers a greener chemical process and ultrafast growth rates, and demonstrates the successful preparation of high-quality films. The results show the correlation between precursor film homogeneity and the physical properties of the final superconducting films.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Physics, Applied
Tomoya Horide, Yusuke Ichino, Kaname Matsumoto
Summary: High temperature superconductors exhibit complex vortex behavior influenced by nanoscale pinning centers. The trapping angle of strong nanorods determines the vortex phase boundary, while matrix defects and nanorod pinning affect vortex behavior. The interactions between these elements determine the angular vortex phase of HTSCs.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
Suman Kumari, Mohd Anas, D. S. Raghav, Shital Chauhan, P. K. Siwach, Vivek Malik, H. K. Singh
Summary: We present a detailed study on the magnetotransport behavior of YBCO-SSMO superconducting-ferromagnetic composite thin films. The results show that the incorporation of ferromagnetic phase leads to a decrease in the critical temperature of the superconducting phase, a decrease in the slope of the normal state resistance-temperature curves, a decrease in the upper critical field and irreversibility field, and a reduction in hysteresis in the current-voltage characteristics.
Article
Chemistry, Physical
Sansheng Wang, Bingfu Gu, Fang Li, Han Wu, Suleman Muhammad, Yam Prasad Dahal, Zhisong Xiao, Xiaoping Ouyang
Summary: The surface modification of superconductors has been extensively studied, with most methods degrading superconducting properties except for the antidot method. A new parallel ion-beam structure modification (PISM) method has shown to greatly improve the superconductivity of YBCO films by creating smoother surface morphologies and removing impurities. The PISM method enhances the critical current density and current-carrying capacity through the generation of new impurities and shortening of Cu-O bonds.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Xiangyu Bi, Feifan Tian, Ganyu Chen, Zeya Li, Feng Qin, Yang-Yang Lv, Junwei Huang, Caiyu Qiu, Lingyi Ao, Yanbin Chen, Genda Gu, Yanfeng Chen, Hongtao Yuan
Summary: Superconducting quantum interferometer device (SQUID) plays a crucial role in understanding electromagnetic properties and emergent phenomena in quantum materials. By using a specially designed superconducting nano-hole array, it is demonstrated that the contactless detection of magnetic properties and quantized vortices in micro-sized superconducting nanoflakes can be achieved. This new approach provides a quantitative evaluation of the density of pinning centers of the quantized vortices on such micro-sized superconducting samples, which is not accessible with conventional SQUID detection.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Mohan Panth, Victor Ogunjimi, Mary Ann Sebastian, Bibek Gautam, Timothy Haugan, Judy Wu
Summary: This work explores the enhancement of magnetic vortex pinning in BaZrO3 (BZO) + Y2O3 doubly-doped (DD) YBa2Cu3O7 (YBCO) nanocomposite multilayer (DD-ML) films. The pinning force density and pinning isotropy of the DD-ML samples are improved as compared to the single-layer counterparts (DD-SL) without CaY-123 spacers. The improved pinning efficiency is attributed to the presence of c-axis aligned BZO nanorods and the diffusion of Calcium (Ca) along the tensile-strained channels at the BZO nanorods/YBCO interface.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Physics, Applied
Tomoya Horide, Kento Higashi, Manabu Ishimaru, Tatsunori Okada, Satoshi Awaji, Kaname Matsumoto
Summary: The effect of matrix defects on critical current density (J (c)) in YBa2Cu3O7 films containing nanorods was discussed in this study. YBa2Cu3O7 + BaHfO3 and YBa2Cu3O7 + BaSnO3 films were prepared by varying the laser repetition frequency to control the matrix defects. The results showed that short stacking faults improved J(c) for tilted magnetic field, while random point defects improved J(c) regardless of the magnetic field direction.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Physics, Applied
Masaya Gondo, Masashi Yoshida, Yuga Yoshida, Manabu Ishimaru, Tomoya Horide, Kaname Matsumoto, Ryusuke Kita
Summary: The study investigates the nanostructures of BLNO-doped YBCO thin films, revealing self-assembly of BLNO into nanorods in the films, causing tensile strain in the YBCO matrix around them and introducing misfit dislocations at the nanorod-matrix interface.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
Zhengyuan Liu, Bingcheng Luo, Labao Zhang, Boyu Hou, Danyang Wang
Summary: This study investigates the effect of photons on vortex dynamics in amorphous MoSi superconducting thin films through electrical transport measurements. The results show that photon-induced reduction in the potential barrier enhances vortex depinning, mitigating the adverse effect of film inhomogeneity on superconductivity. Understanding vortex dynamics in a-MoSi thin films under external stimuli is important for further fundamental research and optimizing future superconducting devices.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Applied
Andrada Daniel, Mircea Nasui, Traian Petrisor, Ramona Bianca Sonher, Andrea Augieri, Cornelia Pop, Anna Palau, Angelo Vannozzi, Giuseppe Celentano, Lelia Ciontea, Traian Petrisor
Summary: The study investigates the role of diethanolamine (DEA) in the growth of superconducting YBCO thin films, focusing on the physical and superconducting properties of the films with DEA addition.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Physics, Applied
G. T. Telles, A. Romanov, S. Calatroni, X. Granados, T. Puig, J. Gutierrez
Summary: In order to maintain beam stability in the future circular collider study, a RE(=Y, Gd, Eu)Ba2Cu3O7-x high-temperature superconductor was proposed as a low-surface impedance coating for the beam screen. However, persistent currents in the superconductor can degrade magnetic field homogeneity, endangering beam trajectory stability. To counteract this, a highly conductive hybrid coating made of Cu and REBa2Cu3O7-x was explored. This hybrid coating reduces surface impedance compared to pure copper, while maintaining high magnetic field quality.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Physics, Applied
Albert Queralto, Max Sieger, Kapil Gupta, Alexander Meledin, Pedro Barusco, Lavinia Saltarelli, Mariona de Palau, Xavier Granados, Xavier Obradors, Teresa Puig
Summary: This study investigates the integration of the transient liquid-assisted growth (TLAG) approach with physical deposition methodologies for high-throughput growth of YBa2Cu3O7-x (YBCO) films. YBCO precursor films were deposited on different substrates using pulsed laser deposition (PLD) at temperatures below 400 degrees C. The growth of high-quality c-axis YBCO films was controlled by the transformation of Ba-Cu-O (s) to a transient liquid. The optimized experimental conditions resulted in YBCO films with critical temperature (T (c)) values up to 90 K and high critical current densities.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Physics, Applied
Yunwei Sheng, Mathieu Mirjolet, Mario Villa, Jaume Gazquez, Jose Santiso, Andreas Klein, Jordi Fraxedas, Josep Fontcuberta
Summary: Epitaxial LaFeO3-based photocells with different thicknesses were grown on LSAT single-crystal substrates, using LSMO and Pt/BLSO electrodes, to determine their photoresponse. The short-circuit photocurrent initially increases and then decreases with LFO thickness, and is larger or smaller with Pt or BLSO electrodes. The open-circuit voltage shows the opposite trend, being smaller or larger with Pt and BLSO, respectively, consistent with the electronic band alignments and rectifying character of the dark current-voltage data. The complex microstructure and grain boundaries of the films play a significant role in the observed responsivity, which is larger than in similar LFO-based structures.
PHYSICAL REVIEW APPLIED
(2023)
Article
Chemistry, Multidisciplinary
Pol Salles, Roger Guzman, Aleix Barrera, Marti Ramis, Jose Manuel Caicedo, Anna Palau, Wu Zhou, Mariona Coll
Summary: This study focuses on improving the manipulation and crystallinity of Sr3Al2O6 (SAO) sacrificial layer by Ca-substitution, and then explores its application in the ex situ deposition of La0.7Sr0.3MnO3 (LSMO) to obtain strain-free epitaxial films with metal-insulator transition.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Pamela Machado, Roger Guzman, Ramon J. . Morera, Jordi Alcala, Anna Palau, Wu Zhou, Mariona Coll
Summary: The need for highly performant and stable p-type transparent electrodes based on abundant metals is driving research on perovskite oxide thin films. Cost-efficient and scalable solution-based techniques are being explored to prepare these materials and extract their full potential.
CHEMISTRY OF MATERIALS
(2023)
Article
Thermodynamics
Pere Roura-Grabulosa, Jordi Farjas, Joan Pere Lopez-Olmedo, Bohores Villarejo, Susagna Ricart, Xavier Obradors, Teresa Puig
Summary: We have developed a new method for measuring the viscosity of micrometric films using thermomechanical analysis with a millimetric diameter hemispherical probe. The method involves fitting the loading curve (displacement vs. time) obtained from the probe tip crossing the entire film at a constant load to a theoretical curve shape derived from solving the liquid flow problem under the probe tip. The validity of the method has been confirmed by measuring the viscosity of rosin films and analyzing the thermal evolution of unstable liquid films on Ba propionate, Ce(III) propionate, and a low-fluorine precursor film of YBa2Cu3O6+x.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Multidisciplinary
Michal Haubner, Patrick Krkotic, Catarina Serafim, Valentine Petit, Vincent Baglin, Sergio Calatroni, Bernard Henrist, Artur Romanov, Teresa Puig, Joffre Gutierrez
Summary: Particle accelerators with superconducting magnets use a beam screen liner to extract heat and prevent it from reaching the magnets. The beam screen surface is typically made of high-conductivity copper and provides low impedance, low electron-cloud effect, and low dynamic pressure rise. High-temperature superconductors (HTSs), specifically REBCO-CCs, are being considered to decrease the beam screen impedance and allow operation at lower temperatures. Qualification of REBCO-CCs under accelerator-like conditions is necessary. The SEY and ESD of REBCO-CCs were measured at cryogenic temperatures, showing comparable energy and dose dependencies to technical-grade metals.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Emile Fourneau, Jon Ander Arregi, Aleix Barrera, Ngoc Duy Nguyen, Simon Bending, Alvaro Sanchez, Vojtech Uhlir, Anna Palau, Alejandro V. V. Silhanek
Summary: This study investigates the effects of downsizing magnetic metamaterials for on-chip integration. The non-linear magnetic response of ferromagnetic components, magnetic irreversibility, formation of magnetic domains, and the geometry and size of devices are analyzed. The results show that implementing metasurfaces at the microscale can enhance the performance of magnetic field detectors and enable remote charging of small electric devices, opening up new possibilities in information and communication technologies.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Inorganic & Nuclear
Jhonatan R. Guarin, Carlos Frontera, Judith Oro-Sole, Jaume Gazquez, Clemens Ritter, Josep Fontcuberta, Amparo Fuertes
Summary: Europium tantalum perovskite oxynitrides were successfully prepared by a new high-temperature solid-state synthesis method. The crystal structure and magnetic properties of the materials can be tuned by different reactant mixtures and gas atmospheres. Among them, Eu3Ta3O3.66N5.34 is the first example of a triple perovskite oxynitride.
INORGANIC CHEMISTRY
(2023)
Article
Physics, Applied
P. Barusco, J. Giguere, C. Lacroix, F. Sirois, X. Granados, T. Puig, X. Obradors
Summary: This study presents a detailed fabrication route for the buffer-layers-CFD architecture using a solid-vapor silver sulfurization technique, and analyzes the performance of the trilayer structure processed under different conditions. The results show that this architecture allows for faster generation of electric potential, with a strong enhancement effect.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)