Disaccommodation in Sr-doped YIG

Direct Observation of Asymmetric Sr Diffusion in Sr--Doped La2CuO4

Superconductivity in copper oxides arises when a parent insulator compound is doped beyond some critical concentration [1]. In the case of La2CuO4 (LCO), high-Tc superconductivity is obtained either by substituting La 3+ with Sr 2+ or by inserting interstitial O 2[2]. Latest advance of the unique capabilities of layer-by-layer oxide molecular beam epitaxy (MBE) allows controlling the structural...

ab - plane optical properties of Ni - doped Bi Sr CaCu

Ž . The ab-plane optical reflectance of single crystal of Bi Sr Ca Cu Ni O , for xs0.0215, has been measured 2 2 1yx x 2 8qd y1 Ž . from 80 to 40 000 cm 10 meV–5 eV and at temperatures between 20 and 300 K. Through Ni substitution, the optical conductivity shows a broad peak at about 400 cm, which grows in intensity and shifts to lower frequency as the temperature is reduced. We suggest that th...

μ + SR study of carbon - doped MgB 2 superconductors

Phase separation , thermal history and magnetic behaviour of Sr doped

High-resolution transmission electron microscopy observations and magnetic ac susceptibility measurements have been carried out to study the changes in the magnetic properties of La1−xSrxCoO3 samples (x 0.3) processed at different annealing temperatures, ranging from 1273 to 1573 K. Although neutron diffraction excludes the coexistence of distinct phases with different chemical composition, roo...

Initial destination of the disaccommodation step response

Peak velocity and peak acceleration of disaccommodation step responses remain invariant of response magnitude for a constant starting position and they increase linearly with proximity of starting position. This suggests that disaccommodation response is initiated towards an initial (default) destination and is switched mid-flight to attain the desired final destination. The dioptric location o...