Unconventional critical behaviour in weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1)

Abstract Recent investigation on weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1) reveal the existence of a cluster glass phase (CGP) and a Griffiths-like phase (GP) below and above the ferromagnetic transition temperature (T C), respectively [(2019) Sci. Rep. 9 15888]. In this work, the influence of t...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kavita Yadav, Dheeraj Ranaut, K. Mukherjee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/250f95d5a6c346a087272ba6a5604de6
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:250f95d5a6c346a087272ba6a5604de6
record_format	dspace
spelling	oai:doaj.org-article:250f95d5a6c346a087272ba6a5604de62021-12-02T18:14:40ZUnconventional critical behaviour in weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1)10.1038/s41598-021-98377-y2045-2322https://doaj.org/article/250f95d5a6c346a087272ba6a5604de62021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98377-yhttps://doaj.org/toc/2045-2322Abstract Recent investigation on weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1) reveal the existence of a cluster glass phase (CGP) and a Griffiths-like phase (GP) below and above the ferromagnetic transition temperature (T C), respectively [(2019) Sci. Rep. 9 15888]. In this work, the influence of these inhomogeneous phases on the critical behaviour (around T C) of the above-mentioned series of alloys has been investigated in detail. For the parent alloy Fe2CrAl, the critical exponent γ is estimated as ~ 1.34, which lies near to the ordered 3D Heisenberg class, whereas the obtained value of the critical exponent β ~ 0.273 does not belong to any universality class. With increment in Mn concentration, both exponents γ and β increase, where γ and β approach the disordered and ordered 3D Heisenberg class, respectively. The observed deviation of γ and unconventional value of δ can be ascribed to the increment of GP with Mn-concentration. The trend noted for β can be attributed to the increment in CGP regime with an increase in Mn-content. The estimated critical exponents are consistent and reliable as corroborated using the scaling law and equations of state. Our studies indicate that the critical phenomenon of Fe2-xMnxCrAl (0 ≤ x < 1) alloys possibly belong to a separate class, which is not described within the framework of any existing universal model.Kavita YadavDheeraj RanautK. MukherjeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kavita Yadav Dheeraj Ranaut K. Mukherjee Unconventional critical behaviour in weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1)
description	Abstract Recent investigation on weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1) reveal the existence of a cluster glass phase (CGP) and a Griffiths-like phase (GP) below and above the ferromagnetic transition temperature (T C), respectively [(2019) Sci. Rep. 9 15888]. In this work, the influence of these inhomogeneous phases on the critical behaviour (around T C) of the above-mentioned series of alloys has been investigated in detail. For the parent alloy Fe2CrAl, the critical exponent γ is estimated as ~ 1.34, which lies near to the ordered 3D Heisenberg class, whereas the obtained value of the critical exponent β ~ 0.273 does not belong to any universality class. With increment in Mn concentration, both exponents γ and β increase, where γ and β approach the disordered and ordered 3D Heisenberg class, respectively. The observed deviation of γ and unconventional value of δ can be ascribed to the increment of GP with Mn-concentration. The trend noted for β can be attributed to the increment in CGP regime with an increase in Mn-content. The estimated critical exponents are consistent and reliable as corroborated using the scaling law and equations of state. Our studies indicate that the critical phenomenon of Fe2-xMnxCrAl (0 ≤ x < 1) alloys possibly belong to a separate class, which is not described within the framework of any existing universal model.
format	article
author	Kavita Yadav Dheeraj Ranaut K. Mukherjee
author_facet	Kavita Yadav Dheeraj Ranaut K. Mukherjee
author_sort	Kavita Yadav
title	Unconventional critical behaviour in weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1)
title_short	Unconventional critical behaviour in weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1)
title_full	Unconventional critical behaviour in weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1)
title_fullStr	Unconventional critical behaviour in weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1)
title_full_unstemmed	Unconventional critical behaviour in weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1)
title_sort	unconventional critical behaviour in weak ferromagnets fe2-xmnxcral (0 ≤ x < 1)
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/250f95d5a6c346a087272ba6a5604de6
work_keys_str_mv	AT kavitayadav unconventionalcriticalbehaviourinweakferromagnetsfe2xmnxcral0x1 AT dheerajranaut unconventionalcriticalbehaviourinweakferromagnetsfe2xmnxcral0x1 AT kmukherjee unconventionalcriticalbehaviourinweakferromagnetsfe2xmnxcral0x1
_version_	1718378382062780416

Unconventional critical behaviour in weak ferromagnets Fe2-xMnxCrAl (0 ≤ x < 1)

Ejemplares similares