CASTELLANO , Carlo

In the present paper we report a small angle neutron scattering (SANS) study of magnetic clusters formation in (Pr0.55Ca0.45)(Mn1yCry)O3 (y = 0.00, 0.03, 0.06) manganites which was performed by analyzing, above and below the magnetic phase transitions, the momentum transfer q dependence of the SANS intensity on temperature and on the applied...

The crystal and magnetic structures of the (La0.63Ca0.37)(Mn1xTMx)O3 compounds (x = 0.00, 0.03,0.08; TM = Cu2+, Ni2+) were investigated between 5K and 300K by means of dc magnetic measurements and neutron powder diffraction analysis followed by Rietveld refinement. Both substituting cations lead to a reduction of the long range ferromagnetic...

The crystal and magnetic structures of 10 and 20 nm sized (La1-xCax)MnO3 (x = 0.37, 0.50, 0.75) have been investigated between 5 and 300 K by means of Rietveld refinement of neutron powder diffraction data, coupled with transmission electron microscope observation and magnetization measurements. TEM observation reveals that nanoparticles are...