Low temperature high magnetic field ${}^{57}Fe$ M$\ddot{o}$ssbauer study of kinetic arrest in $H{f}_{0.77}T{a}_{0.23}F{e}_2$

Abstract

Low temperature high magnetic field ${}^{57}Fe$ M$\ddot{o}$ssbauer measurements were carried out on inter-metallic $H{f}_{0.77}T{a}_{0.23}F{e}_2$ compound by following novel paths in H-T space. The ferromagnetic (FM) fraction at 5K and zero magnetic field is shown to depend on cooling field i.e., higher the field higher is the FM fraction. M$\ddot{o}$ssbauer spectra collected in the presence of 4 Tesla magnetic field shows that the antiferromagnetic (AFM) spins cant with respect to the applied magnetic field and hence, contribute to the total bulk magnetization in this compound. The data also show induced magnetic moment even at the 2a site of AFM phase. M$\ddot{o}$ssbauer spectra collected using CHUF (cooling and heating in un-equal magnetic fields) protocol shows re-entrant transition when sample is cooled in zero field and measured during warming in 4 Tesla showing FM state as the equilibrium state. The present work is the first microscopic experimental evidence for the de-vitrification of kinetically arrested magnetic state.

7 pages, 7 figures and 3 Tables

References in corpus (10)

• Charge order, dynamics, and magneto-structural transition in multiferroic LuFe${}_2$O${}_4$
• Charge order in LuFe2O4: antiferroelectric ground state and coupling to magnetism
• Relating supercooling and glass-like arrest of kinetics for phase separated systems: studies on doped CeFe${}_2$ and (La,Pr,Ca)MnO${}_3$
• Coexisting tuneable fractions of glassy and equilibrium long-range-order phases in manganites
• Field induced magnetic transition and metastability in Co substituted $M{n}_{2}Sb$
• Conversion of glassy antiferromagnetic-insulating phase to equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr${}_{0.5}$Ca${}_{0.5}$MnO${}_3$
• History dependent nucleation and growth of the martensitic phase in a magnetic shape memory alloy Ni${}_{45}$Co${}_5$Mn${}_{38}$Sn${}_{12}$
• Excess specific heat and evidence of zero point entropy in magnetic glassy state of half-doped manganites
• 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
• Concentration dependence in kinetic arrest of first order magnetic transition in Ta doped $HfF{e}_2$

Cited by in corpus (1)

• Novel thermal effects across first order magnetic transition in Ta doped $HfF{e}_2$ intermetallic