Magnetic Properties of Mixed Valence La(AgSr)MnO3 Manganites Obtained by Solid‐State Reaction Method. Issue 3 (6th December 2012)

• Record Type: Journal Article
• Authors: Amano, M. E.; Betancourt, I.; Huerta, L.; Stevenson, J.
• Is Part Of: Journal of the American Ceramic Society. Volume 96:Issue 3(2013)
• Page Start: 812
• Page End: 815
• Publication Date: 2012-12-06
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.12099
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" id="jace12099-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>In this work, we present a systematic study on the effect of monovalent and divalent cation inclusion on the magnetic properties of the manganites series La_0.80(Ag_{1−<italic>x</italic>}Sr_{<italic>x</italic>})_0.20MnO₃ (<italic>x</italic> = 0.0–1.0) synthesized by the solid‐state reaction method. The decreasing Sr:Ag proportion across the compositional series was verified by X‐ray photoelectron spectroscopy. Concerning magnetic properties, the hysteresis curves manifested an initial paramagnetic response at <italic>x</italic> = 0.0, followed by a progressive ferromagnetic behavior with an optimum Ag:Sr ratio at <italic>x</italic> = 0.75, for which an enhanced saturation magnetization of 51 Am²/kg and a Curie temperature of 336 K were recorded. Results are explained on the basis of the effect of the increasing unit cell volume on the double exchange interaction between magnetic Mn³⁺– Mn⁴⁺ atoms.</p> </abstract>