A detailed investigation of first order ferrimagnetic (FRI) to antiferromagnetic (AFM) transition in Co (15%) doped Mn2Sb is carried out. These measurements demonstrate anomalous thermomagnetic irreversibility and glass-like frozen FRI phase at low temperatures. The irreversibility arising between the supercooling and superheating spinodals is distinguised in an ingenious way from the irreversibility arising due to kinetic arrest. Field annealing measurements shows reentrant FRI-AFM-FRI transition with increasing temperature. These measurements also show that kinetic arrest band and supercooling band are anitcorrelated i.e regions which are kinetically arrested at higher temperature have lower supercooling temperature and vice versa.
@article{arxiv.0707.0950,
title = {Field induced magnetic transition and metastability in Co substituted $Mn_{2}Sb$},
author = {Pallavi Kushwaha and R Rawat and P Chaddah},
journal= {arXiv preprint arXiv:0707.0950},
year = {2007}
}