Journal of Superconductivity and Novel Magnetism

, Volume 32, Issue 12, pp 3939–3945 | Cite as

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

  • M. EgilmezEmail author
  • N. M. Hamdan
  • H. Alawadhi
  • M. S. AlGhabra
  • D. Prabhakarian
Original Paper


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.


Layered Manganite Raman spectroscopy Phase separation, short ranged magnetism Complex oxides 


Funding Information

This study received funding from Faculty Research Grant (FRG17-R-11& EFRG18-MSE-CAS-68) from the American University of Sharjah.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of PhysicsAmerican University of SharjahSharjahUnited Arab Emirates
  2. 2.Materials Science and Engineering Research InstituteAmerican University of SharjahSharjahUnited Arab Emirates
  3. 3.Centre for Advanced Materials Research, Research Institute of Sciences and EngineeringUniversity of SharjahSharjahUnited Arab Emirates
  4. 4.Department of PhysicsUniversity of OxfordOxfordUK

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