11 papers
Anelastic relaxation process of polaronic origin in La{2-x}Sr{x}CuO{4}: interaction between the charge stripes and pinning centers
F. Cordero, A. Paolone, R. Cantelli +1
The evolution of an anelastic relaxation process occurring around 80 K in La{2-x}Sr{x}CuO{4} at a measuring frequency of ~1 kHz has been followed from x = 0.0075 to the overdoped r…
Anelastic spectroscopy study of the spin-glass and cluster spin-glass phases of LaSrCuO
A. Paolone, F. Cordero, R. Cantelli +1
The anelastic spectra of LaSrCuO have been measured at liquid He temperatures slightly below and above the concentration which is considere…
Observation of an incoherent thermally activated proton hopping process in calix-[4]-arene by means of anelastic spectroscopy
A. Paolone, R. Cantelli, R. Caciuffo +1
The anelastic spectrum of calix[4]arene was measured at two different vibrational frequencies. Three thermally activated peaks were detected. The lowest temperature peak can be des…
Glassy dynamics of the inhomogeneous metallic phase in La1-xCaxMnO3
F. Cordero, C. Castellano, R. Cantelli +1
The anelastic spectra (elastic energy loss and dynamic modulus versus temperature) of La1-xCaxMnO3 have been measured for 0.33< x < 0.5. A peak in the imaginary part of the elastic…
A search for incipient lattice instabilities in MgB by anelastic spectroscopy
F. Cordero, R. Cantelli, G. Giunchi +1
We measured the complex dynamic elastic modulus of MgB2 between 1.3 and 650 K at frequencies included between 5 and 70 kHz. The main purpose of this work is to search for possible…
Cluster Spin Glass Distribution Functions in LaSrCuO
R. S. Markiewicz, F. Cordero, A. Paolone +1
Signatures of the cluster spin glass have been found in a variety of experiments, with an effective onset temperature that is frequency dependent. We reanalyze the experim…