DSpace Repository

Octahedral distortion induced magnetic anomalies in LaMn0.5Co0.5O3 single crystals

Show simple item record

dc.contributor.author Manna, Kaustuv
dc.contributor.author Bhadram, Venkata Srinu
dc.contributor.author Elizabeth, Suja
dc.contributor.author Narayana, Chandrabhas
dc.contributor.author Kumar, P. S. Anil
dc.date.accessioned 2017-02-16T11:32:47Z
dc.date.available 2017-02-16T11:32:47Z
dc.date.issued 2014
dc.identifier.citation Manna, K; Bhadram, VS; Elizabeth, S; Narayana, C; Kumar, PSA, Octahedral distortion induced magnetic anomalies in LaMn0.5Co0.5O3 single crystals. Journal of Applied Physics 2014, 116 (4), 43903 http://dx.doi.org/10.1063/1.4891015 en_US
dc.identifier.citation Journal of Applied Physics en_US
dc.identifier.citation 116 en_US
dc.identifier.citation 4 en_US
dc.identifier.issn 0021-8979
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/2310
dc.description Restricted Access en_US
dc.description.abstract Single crystals of LaMn0.5Co0.5O3 belonging to the ferromagnetic-insulator and distorted perovskite class were grown using a four-mirror optical float zone furnace. The as-grown crystal crystallizes into an orthorhombic Pbnm structure. The spatially resolved 2D Raman scan reveals a strain-induced distribution of transition metal (TM)-oxygen (O) octahedral deformation in the as-grown crystal. A rigorous annealing process releases the strain, thereby generating homogeneous octahedral distortion. The octahedra tilt by reducing the bond angle TM-O-TM, resulting in a decline of the exchange energy in the annealed crystal. The critical behavior is investigated from the bulk magnetization. It is found that the ground state magnetic behavior assigned to the strain-free LaMn0.5Co0.5O3 crystal is of the 3D Heisenberg kind. Strain induces mean field-like interaction in some sites, and consequently, the critical exponents deviate from the 3D Heisenberg class in the as-grown crystal. The temperature-dependent Raman scattering study reveals strong spin-phonon coupling and the existence of two magnetic ground states in the same crystal. (C) 2014 AIP Publishing LLC. en_US
dc.description.uri 1089-7550 en_US
dc.description.uri http://dx.doi.org/10.1063/1.4891015 en_US
dc.language English en
dc.language.iso English en_US
dc.publisher American Institute of Physics en_US
dc.rights @American Institute of Physics, 2014 en_US
dc.subject Applied Physics en_US
dc.subject Phonon Raman-Scattering en_US
dc.subject Lamn1-Xcoxo3 en_US
dc.subject Nickel en_US
dc.subject Iron en_US
dc.subject Mn en_US
dc.subject Co en_US
dc.title Octahedral distortion induced magnetic anomalies in LaMn0.5Co0.5O3 single crystals en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Advanced Search

Browse

My Account