Use of Arrott plots to identify Néel temperature (TN) in metamagnetic Ni48Co6Mn26Al20 polycrystalline ribbons

Rohit Singh, Saurabh Kumar Srivastava, Arun K. Nigam, Vladimir V. Khovaylo, L. Varga, Ratnamala Chatterjee

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

(Ni48Co6)Mn26Al20 polycrystalline ribbons with B2 structure at room temperature are investigated. Considering the presence of competing magnetic interactions, Arrott-plot analysis gives TN ∼ 170 K. A broad ferromagnetic-paramagnetic transition (TC) is observed at ∼200 K. H-T phase-diagram is used to validate the presence of competing exchange interactions that persist till very close to TC. Based on Néel theory, a cluster model is used to explain the presence of ferromagnetic and antiferromagnetic clusters in the sample. Formation of ferromagnetic clusters can be understood in terms of positive exchange interactions among the Mn atoms that are neighboring Co atoms located at Ni sites.

Original languageEnglish
Article number243911
JournalJournal of Applied Physics
Volume114
Issue number24
DOIs
Publication statusPublished - Dec 28 2013

Fingerprint

ribbons
plots
interactions
temperature
atoms
phase diagrams
room temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Use of Arrott plots to identify Néel temperature (TN) in metamagnetic Ni48Co6Mn26Al20 polycrystalline ribbons. / Singh, Rohit; Srivastava, Saurabh Kumar; Nigam, Arun K.; Khovaylo, Vladimir V.; Varga, L.; Chatterjee, Ratnamala.

In: Journal of Applied Physics, Vol. 114, No. 24, 243911, 28.12.2013.

Research output: Contribution to journalArticle

Singh, Rohit ; Srivastava, Saurabh Kumar ; Nigam, Arun K. ; Khovaylo, Vladimir V. ; Varga, L. ; Chatterjee, Ratnamala. / Use of Arrott plots to identify Néel temperature (TN) in metamagnetic Ni48Co6Mn26Al20 polycrystalline ribbons. In: Journal of Applied Physics. 2013 ; Vol. 114, No. 24.
@article{24360b76de3f4a57b124d02ecb4f5f81,
title = "Use of Arrott plots to identify N{\'e}el temperature (TN) in metamagnetic Ni48Co6Mn26Al20 polycrystalline ribbons",
abstract = "(Ni48Co6)Mn26Al20 polycrystalline ribbons with B2 structure at room temperature are investigated. Considering the presence of competing magnetic interactions, Arrott-plot analysis gives TN ∼ 170 K. A broad ferromagnetic-paramagnetic transition (TC) is observed at ∼200 K. H-T phase-diagram is used to validate the presence of competing exchange interactions that persist till very close to TC. Based on N{\'e}el theory, a cluster model is used to explain the presence of ferromagnetic and antiferromagnetic clusters in the sample. Formation of ferromagnetic clusters can be understood in terms of positive exchange interactions among the Mn atoms that are neighboring Co atoms located at Ni sites.",
author = "Rohit Singh and Srivastava, {Saurabh Kumar} and Nigam, {Arun K.} and Khovaylo, {Vladimir V.} and L. Varga and Ratnamala Chatterjee",
year = "2013",
month = "12",
day = "28",
doi = "10.1063/1.4858377",
language = "English",
volume = "114",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "24",

}

TY - JOUR

T1 - Use of Arrott plots to identify Néel temperature (TN) in metamagnetic Ni48Co6Mn26Al20 polycrystalline ribbons

AU - Singh, Rohit

AU - Srivastava, Saurabh Kumar

AU - Nigam, Arun K.

AU - Khovaylo, Vladimir V.

AU - Varga, L.

AU - Chatterjee, Ratnamala

PY - 2013/12/28

Y1 - 2013/12/28

N2 - (Ni48Co6)Mn26Al20 polycrystalline ribbons with B2 structure at room temperature are investigated. Considering the presence of competing magnetic interactions, Arrott-plot analysis gives TN ∼ 170 K. A broad ferromagnetic-paramagnetic transition (TC) is observed at ∼200 K. H-T phase-diagram is used to validate the presence of competing exchange interactions that persist till very close to TC. Based on Néel theory, a cluster model is used to explain the presence of ferromagnetic and antiferromagnetic clusters in the sample. Formation of ferromagnetic clusters can be understood in terms of positive exchange interactions among the Mn atoms that are neighboring Co atoms located at Ni sites.

AB - (Ni48Co6)Mn26Al20 polycrystalline ribbons with B2 structure at room temperature are investigated. Considering the presence of competing magnetic interactions, Arrott-plot analysis gives TN ∼ 170 K. A broad ferromagnetic-paramagnetic transition (TC) is observed at ∼200 K. H-T phase-diagram is used to validate the presence of competing exchange interactions that persist till very close to TC. Based on Néel theory, a cluster model is used to explain the presence of ferromagnetic and antiferromagnetic clusters in the sample. Formation of ferromagnetic clusters can be understood in terms of positive exchange interactions among the Mn atoms that are neighboring Co atoms located at Ni sites.

UR - http://www.scopus.com/inward/record.url?scp=84891707657&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84891707657&partnerID=8YFLogxK

U2 - 10.1063/1.4858377

DO - 10.1063/1.4858377

M3 - Article

VL - 114

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 24

M1 - 243911

ER -