Ultrasonic velocity measurements have been undertaken by the pulse transmission
technique using Y Ba Cu O samples prepared by the melt-powder-melt-growth (MPMG) …

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The effect of oxygen loss on the luminescence of YBa2Cu3O7− x has been investigated by
cathodoluminescence (CL) in the scanning electron microscope (SEM) and by Raman …

Elastic and specific-heat measurements have been performed on single-phase
polycrystalline Y 1− x Ca x Ba 2 Cu 4 O 8 (x= 0, 0.025, 0.05, 0.1) in the temperature region …

The velocities of longitudinal and shear ultrasonic waves propagated in dense (96% of
theoretical density) ceramic YBa 2 Cu 3 O 7-x have been measured as functions of …

Elastic measurements on La-based and Y-based bulk oxide superconductive materials in
the temperature range 4.2–350 K are reviewed. Emphasis is placed on the elastic behavior …

The shear ultrasonic velocity of single-phase polycrystalline superconducting (orthorhombic)
and non-superconducting (tetragonal) samples of ErBa2Cu3O7− δ has been determined …

[en] The velocities of longitudinal and shear ultrasonic waves propagating in
superconducting YBa 2 Cu 3 O 6+ x polycrystals are reported as functios of temperature …

We present a concept for the search for optical effects which indicates a violation of time-
reversal symmetry in high-T c superconductors. The idea is to investigate the reaction of the …

The ultrasonic velocity measurements of a Y-Ba-Cu-O material, prepared by Melt-Powder-
Melt-Growth process (MPMG) with Nd-123 as a seed material, known as MPMG-II material …