Probing the Subtle Magnetic Transitions with Raman Spectroscopy in a Bi-layered La1.15Sr1.85Mn2O7 Single Crystal View Full Text


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Article Info

DATE

2019-06-20

AUTHORS

M. Egilmez, N. M. Hamdan, H. Alawadhi, M. S. AlGhabra, D. Prabhakarian

ABSTRACT

The magnetic properties of a single crystalline bi-layered La1.15Sr1.85Mn2O7 manganite have been studied using magnetization measurements complemented by low-temperature Raman spectroscopy. The bulk magnetization measurements revealed a magnetic transition at a temperature of Tc = 85 K. The temperature dependence of the inverse magnetization data revealed an upward deviation from the Curie-Weiss law at a temperature of T* = 250 K, which is indicative of the onset of the short-ranged ferromagnetic metallic cluster formation based on the phase separation/coexistence models. Raman spectrum analysis of certain peaks revealed interesting phenomena at around T*. The T* that has been observed in the inverse magnetization data and the Raman spectrum analysis of certain peaks has been discussed. Our observations demonstrate that Raman spectroscopy is a powerful technique for the determination of subtle magnetic phenomena in this group of materials. More... »

PAGES

3939-3945

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10948-019-05182-w

DOI

http://dx.doi.org/10.1007/s10948-019-05182-w

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1117366525


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