Local structural effects in Sr3NiRhO6 across magnetic transitions

Singh, Navneet; Khalid, S.; Bindu, R.

doi:10.1088/2053-1591/3/4/046301

Title: Local structural effects in Sr₃NiRhO₆ across magnetic transitions

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Abstract

Here, we investigate the temperature dependence of the structural parameters of quasi-one-dimensional Sr₃NiRhO₆ across the region of magnetic phase transitions using Ni K-edge and Sr K-edge x-ray absorption spectroscopy (XAS). The features in the x-ray absorption near-edge region are identified using multiple scattering calculations. The temperature-dependent extended x-ray absorption fine structure (EXAFS) studies show that the setting of the intra-chain super exchange interaction starts at ~200 K, which is well above the first transition temperature (45 K) revealed by magnetic susceptibility studies. The onset of the inter-chain super–super exchange interaction appears to be at ~125 K. Interestingly, the role played by direct exchange interaction between the Ni 3d and Rh 4d states in stabilising the magnetic interaction is less significant. The present results shed light on the generic features exhibited by isostructural compounds and may help in identifying the magnetic exchange pathways useful for understanding the unusual properties exhibited by such compounds.

Authors:

Singh, Navneet ^[1]; Khalid, S. ^[2]; Bindu, R. ^[1]

Indian Institute of Technology Mandi, Himachal Pradesh (India)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Publication Date:: Wed Apr 06 00:00:00 EDT 2016

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1341505

Report Number(s):: BNL-108435-2015-JA
Journal ID: ISSN 2053-1591; R&D Project: LS001

Grant/Contract Number:: SC00112704

Resource Type:: Accepted Manuscript

Journal Name:: Materials Research Express (Online)

Additional Journal Information:: Journal Name: Materials Research Express (Online); Journal Volume: 3; Journal Issue: 4; Journal ID: ISSN 2053-1591

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; quasi-one-dimensional system; x-ray absorption spectroscopy; strongly correlated electron systems

Citation Formats


                    Singh, Navneet, Khalid, S., and Bindu, R. Local structural effects in Sr3NiRhO6 across magnetic transitions.  United States: N. p., 2016. 
Web.  doi:10.1088/2053-1591/3/4/046301.

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                    Singh, Navneet, Khalid, S., & Bindu, R. Local structural effects in Sr3NiRhO6 across magnetic transitions.  United States.  https://doi.org/10.1088/2053-1591/3/4/046301

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                    Singh, Navneet, Khalid, S., and Bindu, R. Wed .  
"Local structural effects in Sr3NiRhO6 across magnetic transitions".  United States.  https://doi.org/10.1088/2053-1591/3/4/046301.  https://www.osti.gov/servlets/purl/1341505.

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@article{osti_1341505,

  title        = {Local structural effects in Sr3NiRhO6 across magnetic transitions},

  author       = {Singh, Navneet and Khalid, S. and Bindu, R.},

  abstractNote = {Here, we investigate the temperature dependence of the structural parameters of quasi-one-dimensional Sr3NiRhO6 across the region of magnetic phase transitions using Ni K-edge and Sr K-edge x-ray absorption spectroscopy (XAS). The features in the x-ray absorption near-edge region are identified using multiple scattering calculations. The temperature-dependent extended x-ray absorption fine structure (EXAFS) studies show that the setting of the intra-chain super exchange interaction starts at ~200 K, which is well above the first transition temperature (45 K) revealed by magnetic susceptibility studies. The onset of the inter-chain super–super exchange interaction appears to be at ~125 K. Interestingly, the role played by direct exchange interaction between the Ni 3d and Rh 4d states in stabilising the magnetic interaction is less significant. The present results shed light on the generic features exhibited by isostructural compounds and may help in identifying the magnetic exchange pathways useful for understanding the unusual properties exhibited by such compounds.},

  doi          = {10.1088/2053-1591/3/4/046301},

  journal      = {Materials Research Express (Online)},

  number       = 4,

  volume       = 3,

  place        = {United States},

  year         = {Wed Apr 06 00:00:00 EDT 2016},

  month        = {Wed Apr 06 00:00:00 EDT 2016}

}

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Title: Local structural effects in Sr3NiRhO6 across magnetic transitions

Abstract

Citation Formats

Title: Local structural effects in Sr₃NiRhO₆ across magnetic transitions