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

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

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)115-120
Number of pages6
Journalphysica status solidi (a)
Issue number1
Publication statusPublished - 1991 Jul 16
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Microhardness Studies on BiCaSrCuO (2122) Superconducting Single Crystals and Pellets'. Together they form a unique fingerprint.

Cite this