3-7 July 2017
Africa/Johannesburg timezone

Critical behaviour at paramagnetic to ferromagnetic phase transition in Nd2Pt2In

6 Jul 2017, 16:30
20m
A403A (Engineering Building 51)

A403A

Engineering Building 51

Oral Presentation Track A - Division for Physics of Condensed Matter and Materials Physics of Condensed Matter and Materials 1

Speaker

Prof. Moise Tchoula Tchokonte (University of the Western Cape)

Description

The critical behaviour at the paramagnetic to ferromagnetic phase transition in Nd2Pt2In compound has been investigated by means of magnetization measurements using various techniques such as the modified Arrott – plot, the Kouvel – Fisher plot and the critical isotherm analysis. Still the nature of the ferromagnetic transition is found to be of the second – order, the obtained values of the critical exponents, &beta = 0.346(8), &gamma = 1.3548(7) and &delta = 4.14(4) are close to those predicted theoretically by the 3D – Heisenberg model (&beta = 0.365, &gamma = 1.386 and &delta = 4.8). Furthermore the scaling relations are obeyed indicating renormalization of interactions around the Curie temperature TC.

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Primary author

Prof. Moise Tchoula Tchokonte (University of the Western Cape)

Co-authors

Mr Amal Bashir (University of the Western Cape) Prof. Andre Strydom (University of Johannesburg) Dr Buyisiwe Sondezi (University of Johannesburg) Prof. Dariusz Kaczorowski (Institute of Low Temperature and Structure Research, Polish Academic of Sciences, Wroclaw, Poland) Mr Jean Jules Mboukam (University of the Western Cape) Dr Mamesh Kumar (University of Johannesburg)

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