Investigation of the critical behavior in Mn[sub 0.94]Nb[sub 0.06]CoGe alloy by using the field dependence of magnetic entropy change

Simple item page
dc.contributor.authorDebnath, JCen_AU
dc.contributor.authorShamba, Pen_AU
dc.contributor.authorStrydom, AMen_AU
dc.contributor.authorWang, JLen_AU
dc.contributor.authorDou, SXen_AU
dc.date.accessioned2013-11-20T04:13:47Zen_AU
dc.date.available2013-11-20T04:13:47Zen_AU
dc.date.issued2013-03-07en_AU
dc.date.statistics2013-11-20en_AU
dc.description.abstractThe critical behaviour of Mn0.94Nb0.06CoGe alloy around the paramagnetic-ferromagnetic phase transition was studied based on the field dependence on magnetic entropy change. By using the obtained exponents, the modified Arrott plot is consistent with that by using conventional method. These critical exponents are confirmed by the Widom scaling relation. Based on these critical exponents, the magnetization, field and temperature data around Tc collapse into two curves obeying the single scaling equation M(H, epsilon) = epsilon(beta)f+/-(H/epsilon(beta+gamma)). The calculated critical exponents not only obey the scaling theory but also anastomose the deduced results from the Kouvel-Fisher method [J. S. Kouvel and M. E. Fisher, Phys. Rev. 136, A1626 (1964)]. The values deduced for the critical exponents in the Mn0.94Nb0.06CoGe alloy are close to the theoretical prediction of the mean-field model, indicating that the magnetic interactions are long range. This method eliminates the drawback due to utilization of multistep nonlinear fitting in a conventional manner. So it provides an alternative method to investigate the critical behaviour. © 2013 American Institute of Physics.en_AU
dc.identifier.articlenumber93902en_AU
dc.identifier.citationDebnath, J. C., Shamba, P., Strydom, A. M., Wang, J. L., & Dou, S. X. (2013). Investigation of the critical behavior in Mn[sub 0.94]Nb[sub 0.06]CoGe alloy by using the field dependence of magnetic entropy change. Journal of Applied Physics, 113 (9), Article Number 093902. doi:10.1063/1.4794100en_AU
dc.identifier.govdoc5166en_AU
dc.identifier.issn0021-8979en_AU
dc.identifier.issue9en_AU
dc.identifier.journaltitleJournal of Applied Physicsen_AU
dc.identifier.urihttp://dx.doi.org/10.1063/1.4794100en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4984en_AU
dc.identifier.volume113en_AU
dc.language.isoenen_AU
dc.publisherAmerican Institute of Physics.en_AU
dc.subjectCobalten_AU
dc.subjectAlloysen_AU
dc.subjectEntropyen_AU
dc.subjectManganeseen_AU
dc.subjectNiobiumen_AU
dc.subjectGermaniumen_AU
dc.titleInvestigation of the critical behavior in Mn[sub 0.94]Nb[sub 0.06]CoGe alloy by using the field dependence of magnetic entropy changeen_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles