NITROGEN-ION IRRADIATION EFFECT ON BA2YCU3O7 SUPERCONDUCTOR

被引：2
作者：
SHIRAISHI, K
ITOH, H
AOKI, Y
机构：
[1] Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki, Gunma, 370-12, Watanuki-machi
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1991年 / 30卷 / 1A期
关键词：
SUPERCONDUCTOR; BA2YCU3O7; CERAMIC; ION IRRADIATION; NITROGEN ION; ELECTRICAL RESISTANCE; TRANSITION TEMPERATURE; CRITICAL CURRENT DENSITY;
D O I：
10.1143/JJAP.30.L25
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Single-phased Ba2YCu3O7-y pellets were sequentially irradiated with 200 keV nitrogen ions of 0.3-6.0 x 10(13) m-2.s-1 in a dose rate up to a dose of 2 x 10(16) m-2 at ambient temperature. Electrical resistance was measured as a function of temperature. The superconducting transition temperature, measured with current density greater than 25 kA.m-2 was increased by the ion irradiations. The optimum dose for the enhancement of the zero-resistance temperature was about 1 x 10(14) m-2. The transition temperature, measured with 100 kA.m-2 in current density, was increased from 86.5-87.1 K to 90.9 K by the irradiation with a dose rate of 1.3 x 10(13) m-2.s-1 to 8.4 x 10(13) m-2.
引用
收藏
页码：L25 / L27
页数：3
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