Real Space Visualization of Thermomagnetic Irreversibility within Supercooling and Superheating Spinodals in $M{n}_{1.85}C{o}_{0.15}Sb$ using Scanning Hall Probe Microscopy

Abstract

Phase coexistence across disorder-broadened and magnetic-field-induced first order antiferromagnetic to ferrimagnetic transition in polycrystalline $M{n}_{1.85}C{o}_{0.15}Sb$ has been studied mesoscopically by Scanning Hall Probe Microscope at 120K and up to 5 Tesla magnetic fields. We have observed hysteresis with varying magnetic field and the evolution of coexisting antiferromagnetic and ferrimagnetic state on mesoscopic length scale. These studies show that the magnetic state of the system at low field depends on the path followed to reach 120 K. The low field magnetic states are mesoscopically different for virgin and second field increasing cycle when 120 K is reached by warming from 5K, but are the same within measurement accuracy when the measuring temperature of 120K is reached from 300K by cooling.

References in corpus (5)

• Charge order, dynamics, and magneto-structural transition in multiferroic LuFe${}_2$O${}_4$
• First order magnetic transition in CeFe${}_2$ alloys: Phase-coexistence and metastability
• Relating supercooling and glass-like arrest of kinetics for phase separated systems: studies on doped CeFe${}_2$ and (La,Pr,Ca)MnO${}_3$
• Field induced magnetic transition and metastability in Co substituted $M{n}_{2}Sb$
• Novel dynamical effects and glassy response in strongly correlated electronic system

Cited by in corpus (7)

• Effect of strain on phase separation and de-vitrification of magnetic glass state in thin films of La5/8-yPryCa3/8MnO3 (y=0.45)
• Relating field-induced shift in transition temperature to the kinetics of coexisting phases in magnetic shape memory alloys
• First order antiferro-ferromagnetic transition in Fe49(Rh0.93Pd0.07)51 under simultaneous application of magnetic field and external pressure
• Giant negative magnetoresistance and kinetic arrest of first-order ferrimagnetic-antiferomagnetic transition in Ge doped Mn${}_2$Sb
• Phase-coexistence and glass-like behavior in magnetic and dielectric solids with long range order
• Low temperature high magnetic field ${}^{57}Fe$ M$\ddot{o}$ssbauer study of kinetic arrest in $H{f}_{0.77}T{a}_{0.23}F{e}_2$
• Magnetic glassy state at low spin state of Co3+ in EuBaCo2O5+δ (δ = 0.47) cobaltite