Optimization of the fabrication process for high trapped field MgB 2 bulks

Muralidhar Miryala; A. Ishihara; K. Suzuki; Y. Fukumoto; Y. Yamamoto; M. Tomita

doi:10.1016/j.physc.2013.04.012

Optimization of the fabrication process for high trapped field MgB ₂ bulks

Muralidhar Miryala, A. Ishihara, K. Suzuki, Y. Fukumoto, Y. Yamamoto, M. Tomita

Research output: Contribution to journal › Article

27 Citations (Scopus)

Abstract

The optimization of the sintering conditions of disk shaped bulk MgB ₂ superconductors with respect to the trapped field is described. Series of samples were prepared by varying the sintering temperatures between 700 and 950 C. The temperature range was divided into three regions, namely the low (<750 C), medium (<825 C), and high (>850 C) temperature region. Scanning electron microscopy and X-ray diffraction indicated that homogenous single phase MgB₂ bulks were produced in the medium sintering temperature range. At this processing temperature range the highest trapped field was also achieved. Samples of 20 mm in diameter and 7 mm thick produced at 775 C exhibited trapped field of 1.50 T at 20 K.

Original language	English
Pages (from-to)	85-88
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	494
DOIs	https://doi.org/10.1016/j.physc.2013.04.012
Publication status	Published - 2013
Externally published	Yes

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Keywords

MgB
Microstructure analysis
Trapped field
X-ray diffraction

ASJC Scopus subject areas

Condensed Matter Physics
Electrical and Electronic Engineering
Energy Engineering and Power Technology
Electronic, Optical and Magnetic Materials

Cite this

Miryala, M., Ishihara, A., Suzuki, K., Fukumoto, Y., Yamamoto, Y., & Tomita, M. (2013). Optimization of the fabrication process for high trapped field MgB ₂ bulks. Physica C: Superconductivity and its Applications, 494, 85-88. https://doi.org/10.1016/j.physc.2013.04.012

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AU - Yamamoto, Y.

AU - Tomita, M.

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10.1016/j.physc.2013.04.012