Microhardness Studies on BiCaSrCuO (2122) Superconducting Single Crystals and Pellets

M. Muralidhar, K. Narasimha Reddy, V. Hari Babu

研究成果: Article査読

27 被引用数 (Scopus)

抄録

Microhardness studies are made on single crystal of Bi2CaSr2Cu2O8+δ (BISCCO) and polycrystalline pellets of BISCCO containing different concentrations of impurity lead (Pb). Optical photomicrographs of single crystals and pellets are taken. The cleavage steps confirm the single crystalline nature of crystals whereas those of pellets show that they contain pores. XRD results confirm that the major phase is (2122). The load vs. hardness data show that the hardness has higher value at lower loads and decreases with increase in load upto 0.04 kg and remains almost the same thereafter. Increase in concentration of Pb also decreases the value of hardness. Temperature measurements indicate that the hardness decreases with increase in temperature (77 to 300 K) with no abnormality near the transition temperature. The results are explained in terms of intrinsic bond strength.

本文言語English
ページ(範囲)115-120
ページ数6
ジャーナルphysica status solidi (a)
126
1
DOI
出版ステータスPublished - 1991 7月 16
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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