Microwave-assisted synthesis and critical analysis for YBa2Cu3O6+δ nanoparticles

被引：0
作者：
Gandhi, Ashish Chhaganlal [1 ]
Lin, Jauyn Grace [1 ]
机构：
[1] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10617, Taiwan
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2018年 / 31卷 / 05期
关键词：
YBCO; superconductivity; oxygen occupancy; microwave synthesis; ESR; MAGNETIC-PROPERTIES; YBCO NANOPARTICLES; PHASE-TRANSITION; SINGLE-CRYSTALS; YBA2CU3O7-DELTA; SUPERCONDUCTIVITY; FERROMAGNETISM; COEXISTENCE; BACUO2+X; EPR;
D O I：
10.1088/1361-6668/aab0c5
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A new cost effective scheme of a microwave-assisted sol-gel route followed by a short annealing time is proposed to synthesize YBCO nanoparticles (NPs) of various sizes. The advanced techniques of synchrotron radiation x-ray diffraction (SRXRD) and electron spin resonance (ESR) are used to analyze the size effects on their magnetic/superconducting properties. The major interesting finding is that the size of YBCO NPs could confine the amount of oxygen content and consequently change the superconducting transition temperature (TC) of YBCO NPs. The ESR result demonstrates a sensitive probe to characterize surface defects in the oxygen-deficient YBCO NPs.
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页数：8
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