2008/02/19 by D. N. H. Nam, Nguyễn Văn Khiển, N. V. Khien +5
Chemistry · Materials Science · Physics and Astronomy · Psychology · #Advanced Condensed Matter Physics #Chemistry #Condensed matter physics #Crystallite #Crystallography #Electrical engineering #Electrical resistivity and conductivity #Ferromagnetism #Magnetic and transport properties of perovskites and related materials #Magnetic domain #Magnetic field #Magnetization #Manganite #Materials science #Perovskite (structure) #Physics #Psychology #Relaxation (psychology) #Resistive touchscreen #Shape Memory Alloy Transformations #Thermal conduction #Thermomagnetic convection #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.77.214406
Submitted to PRB
arxiv created 2008/02/19 · openalex publication_date 2008/06/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In this paper we report the observations of long-time relaxation, aging, and temperature memory behaviors of resistance and magnetization in the ferromagnetic state of the polycrystalline La0.7Ca0.3Mn0.925Ti0.075O3 compound. The observed glassy dynamics of the electrical transport appears to have a magnetic origin and has a very close association with the magnetic glassiness of the sample. The phase separation and strong correlation between magnetic interactions and electronic conduction play the essential roles in producing such a resistive glassiness. We explain the observed effects in terms of a coexistence of two competing thermomagnetic processes, domain growth and magnetic freezing, and propose that hole-doped perovskite manganites can be considered as resistive glasses.