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Browsing by Author "Pahari, B."

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Associating high oxide-ion conductivity and conduction mechanisms with local atomic environments in Na sub(0.5) Bi sub(0.5-x) Ti sub(1-y) Mg sub(y) O sub(3-Delta)

Santhoshkumar, B.; Priolkar, K.R.; Pollastri, S.; de Souza, D.O.; Carlomagno, I.; Bera, A.K.; Yusuf, S.M.; Pahari, B. (Journal of Physical Chemistry C. 125(36); 2021; 19621-19630.)

Oxide-ion conductors are of high interest in electrochemical devices such as solid-oxide fuel cells, oxygen sensors, and separation membranes. In this paper, high oxide-ion conductivity and associated ion conduction mechanism ...
High Na sup(+) conducting Na sub(3)Zr sub(2)Si sub(2)PO sub(12)/Na sub(2)Si sub(2)O sub(5) composites as solid electrolytes for Na sup(+) batteries

Santhoshkumar, B.; Choudhary, M.B.; Bera, A.K.; Yusuf, S.M.; Ghosh, M.; Pahari, B. (Journal of the American Ceramic Society. 105(7); 2022; 5011-5019.)

Sodium superionic conductor Na sub(3)Zr sub(2)Si sub(2)PO sub(12) (NZSP) is a promising material as a solid electrolyte for sodium-ion batteries. The highest conductivity of approx. 1.0 mS/cm at room temperature (RT) was ...
Important influence of Bi deficiency on the conducting property of Na sub(0.5)Bi sub(0.5) TiO sub(3) perovskite oxide

Santhoshkumar, B.; LokeswaraRao, P.; Ramanathan, K.V.; Bera, A.K.; Pahari, B. (AIP Conference Proceedings. 2115(1); 2019; ArticleID_030570.)

Recently it has been reported that low levels of Bi nonstoichiometry (only plus or minus 1 atomic percent) in the nominal starting composition of Na sub(0.5) Bi sub(0.5) TiO sub(3) (NBT) ceramics can lead to dramatic changes ...
Improved ionic conductivity of Na sub(3+x) Sc sub(x) Zr sub(2-x) Si sub(2) PO sub(12) (x = 0.2, 0.3, 0.4, 0.5) NASICON via optimized sintering conditions: Investigation of crystal structure, local atomic structure, and microstructure

Santhoshkumar, B.; Khanna, D.L.R.; Choudhary, M.B.; LokeswaraRao, P.; Ramanathan, K.V.; Bera, A.K.; Yusuf, S.M.; Pahari, B. (Chemical Physics Letters. 776; 2021; ArticleID_138706.)

We report enhanced Na0ion conductivity of Na sub(3+x) Sc sub(x) Zr sub(2-x) Si sub(2) PO sub(12) (x = 0.2-0.5), prepared through solid-state reaction method with optimized sintering temperature of 1220 degrees C for 15 h. ...
Investigation of Composition -Property-Structure Relationship in Solid Superionic Conductor Materials

Bandaru, Santhoshkumar
Low-power broadband homonuclear dipolar recoupling in MAS NMR by two-fold symmetry pulse schemes for magnetization transfers and double-quantum excitation

Teymoori, G.; Pahari, B.; Eden, M. (Journal of Magnetic Resonance. 261; 2015; 205-220.)
NMR investigations unveil phase composition−property correlations in Sr sub(0.55)Na sub(0.45)SiO sub(2.775) fast ion conductor

LokeswaraRao, P.; Pahari, B.; Shivanand, M.; Shet, T.; Ramanathan, K.V. (Solid State Nuclear Magnetic Resonance. 84; 2017; 204-209.)

This paper reports results of sup(23)Na and sup(29)Si solid-state NMR investigations carried out on sodium strontium silicate ion conductor, Sr sub(0.55)Na sub(0.45)SiO sub(2.775) and presents the first experimental evidence ...
Structural and magnetic properties evolution of Cu sub(2x) Cr sub(2x) Zr sub(2-2x) Se sub(4) for 0.500 less than or equal to x less than or equal to 0.650

Belakroum, K.; Bencheikh, R.; Mimouni, M.; Pahari, B.; Boukraa, A. (Physica B: Condensed Matter. 645; 2022; ArticleID_414249.)

A series of compound Cu sub(2x) Cr sub(2x) Zr sub(2-2x) Se sub(4) with x = 0.500-0.650 were prepared by solid-state reaction in sealed quartz tubes. The Rietveld refinements of XRD patterns show that Cu sub(2x) Cr sub(2x) ...
Structure and ionic conductivity of Na sub(3+x) Sc sub(2) Si sub(x) P sub(3-x) O sub(12) (x=0.0, 0.2, 0.4, 0.8) NASICON materials: A combined neutron diffraction, MAS NMR and impedance study

Santhoshkumar, B.; LokeswaraRao, P.; Ramanathan, K.V.; Bera, A.K.; Yusuf, S.M.; Hathwar, V.R.; Pahari, B. (Solid State Sciences. 111; 2021; ArticleID_106470.)

A knowledge of structural parameters that play a role in influencing ionic conduction is the key to the design of improved NASICON materials which have attracted significant attention in recent years as potential solid ...
sup(23)Na and sup(29)Si NMR investigation of Na-SrSiO sub(3) superior ion conductor

LokeswaraRao, P.; Pahari, B.; Ramanathan, K.V. (AIP Conference Proceedings. 1832; 2017; Article ID 070024.)

Present work reports the sup(23)Na, sup(29)Si NMR studies on the Sr sub(0.55) Na sub(0.45) SiO sub(2.775) along with PXRD and ionic conductivity studies. NMR results indicate that Sr sub(0.55) Na sub(0.45) SiO sub(2.775) ...
sup(75)As NMR study of the oriented pnictide superconducting compound NdFeAsO sub(0.83)F sub(0.17)

Pahari, B. (AIP Conference Proceedings. 1731(); 2016; ID130047.)

Magnetization and sup(75)As nuclear magnetic resonance (NMR) measurements in the superconductor NdFeAsO sub(0.83)F sub(0.17) (T sub(C) approx 46 K) are performed in order to investigate the effect of the Nd 4f electrons ...
Supramolecular synthon identification in azelaic acid - Isonicotinamide cocrystal by solid-state NMR

Reddy, Y.J.; LokeswaraRao, P.; Pahari, B.; Tothadi, S.; Ramanathan, K.V. (Journal of Magnetic Resonance Open. 44845; 2022; ArticleID_100056.)

Supramolecular synthons are the smallest structural units that contain the information inherent in building large molecular assemblies. Here, we apply solid-state NMR methods for the identification of the synthon in a ...
Synthesis of High Na sup(+) Ion-Conducting NASICON-based electrolytes and insights from diffraction and positron annihilation lifetime spectroscopy studies

Karmalkar, D.N.; Dutta, D.; Bera, A.; Seikh, M.Y.; Pahari, B. (Journal of Physical Chemistry C. 128(2); 2024; 768-777.)

Na superionic conductor (NASICON) Na sub(3)Zr sub(2)Si sub(2)PO sub(12) is a promising but not applicable electrolyte for solid-state batteries due to its relatively low conductivity. Here, we have pursued two distinct ...
Use of reverse cross-polarization for editing solid-state proton NMR spectra

LokeswaraRao, P.; Reddy, Y.J.; Pahari, B.; Ramanathan, K.V. (Journal of Molecular Structure. 1168; 2018; 49-55.)

We present here the use of the cross-polarization - reverse cross-polarization (CP-RCP) method for editing proton spectra by identifying protons attached exclusively to a nucleus such as carbon or nitrogen. Experiments ...

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