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IJSTR >> Volume 9 - Issue 1, January 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Effect Of Nd Doping On The Phase Diagram Of (Sm1-Yndy)0.52Sr0.48mno3

[Full Text]

 

AUTHOR(S)

Tamal Roy, Prosenjit Sarkar

 

KEYWORDS

Ferromagnetic phase transition, hysteresis, manganite, narrowband system, phase diagram, quenched disorder, single crystal.

 

ABSTRACT

We have performed dc magnetization measurements on (Sm1-yNdy)0.52Sr0.48MnO3 (0 ≤ y ≤ 1) single crystals to study the nature of ferromagnetic to paramagnetic phase transition. For y = 0, ferromagnetic transition is first-order along with a discontinuous change in magnetization at TC (110 K) with the presence of thermal hysteresis. With increasing Nd doping (y), TC increases while thermal hysteresis starts to decrease which eventually vanishes at around y = 0.4, suggesting that first-order ferromagnetic transition becomes second-order in nature at that Nd concentration. The variation of TC with y has been explained in terms of the average A-site cation radius and quenched disorder.

 

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