Critical behaviour of magnetic transitions in KCoF3 and KNiF3 perovskites

Critical behavior study of the spin ordering transition in RVO3 (R = Ce, Pr, Nd, Sm, Gd, Er) by means of ac photopyroelectric calorimetry

“…The magnetic transition is signaled as a strong dip, whose sharpness depends on the presence of one or other rare earth ion. This kind of dips is customarily found in magnetic transitions [30][31][32][33]. Again, we have carefully checked the character of the transitions using low temperature rates, finding a complete superposition of the curves in heating and cooling runs, confirming that they are all continuous.…”

Comprehensive study of the magnetic phase transitions in Tb3Co combining thermal, magnetic and neutron diffraction measurements

“…Thermal diffusivity has been obtained as a function of temperature from room temperature down to 30 K, paying special attention to the region around the magnetic transitions. This technique is very well suited to study the critical behavior in phase transitions and has been successfully applied to solid and liquid crystals (magnetic as well as ferroelectric transitions), including other intermetallic materials [19,[27][28][29][30][31][32][33][34][35], as it combines very low temperature rates (down to 5-10 mK/min) with a high sensitivity. The details of the experimental setup, as well as of the theory explaining how to extract the thermal diffusivity from the photopyroelectric signal, can be found elsewhere [29,36].…”

Ultra-violet to visible band gap engineering of cubic halide KCaCl3 perovskite under pressure for optoelectronic applications: insights from DFT

“…[21][22][23] Because of their immense physical properties, such as photocatalytic, dielectric, ferroelectric, pyroelectric, piezoelectric, magnetic, superconductivity, and ionic conductivity, [24][25][26][27][28][29][30][31] perovskites are oen referred to as "the department store of physical properties". 32 The simple cubic perovskite with space group Pm 3m (#221) could be oxide based (general formula ABO 3 ) 33 or halide based (general formula ABX 3 ), 34 where A and B are cations, while X is a monovalent halogen anion. 35 The rst-principle calculations were successfully implemented to cubic perovskite compounds to analyze different physical properties.…”