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Fabrication of high-entropy REBa <sub>2</sub> Cu <sub>3</sub> O <sub>7</sub> − <i>δ</i> thin films by pulsed laser deposition

Aichi Yamashita, Kazuki Hashimoto, Shunta Suzuki, Yusuke Nakanishi, Yasumitsu Miyata, Toshihiko Maeda, Yoshikazu Mizuguchi

2022Japanese Journal of Applied Physics20 citationsDOI

Abstract

Abstract Thin films of RE Ba 2 Cu 3 O 7− δ ( RE 123, RE : rare earth) having a high-entropy (HE) RE site were successfully fabricated by the pulsed laser deposition method. Solution various RE elements result in increasing configurational entropy of mixing. Critical current density of the HE films exceeds an order of 1.0 MA cm −2 under conditions of T &lt; 20 K and μ 0 H &lt; 7 T. Since the HE effects have a potential to an improvement of irradiation tolerance, the present results encourage further development of HE RE 123 superconducting materials used in the environment with high magnetic fields and irradiation, for example in fusion reactors.

Topics & Concepts

Pulsed laser depositionThin filmMaterials scienceIrradiationFabricationLaserRare earthSuperconductivityDeposition (geology)Critical currentAnalytical Chemistry (journal)Condensed matter physicsNanotechnologyOpticsChemistryMetallurgyPhysicsNuclear physicsPaleontologyBiologyMedicinePathologyChromatographySedimentAlternative medicineHigh Entropy Alloys StudiesPhysics of Superconductivity and MagnetismMetal and Thin Film Mechanics
Fabrication of high-entropy REBa <sub>2</sub> Cu <sub>3</sub> O <sub>7</sub> − <i>δ</i> thin films by pulsed laser deposition | Litcius