Index Catalog // ScholarsArchive@OSU

Effect of oxygen concentration on the structural and magnetic properties of LaRh₁/₂Mn₁/₂O₃ thin films

Creator:: Sheets, W. C., Smith, A. E., Subramanian, M. A., and Prellier, W.
Abstract:: Epitaxial LaRh₁/₂Mn₁/₂O₃ thin films have been grown on (001)-oriented LaAlO₃ and SrTiO₃ substrates using pulsed laser deposition. The optimized thin film samples are semiconducting and ferromagnetic with a Curie temperature close to 100 K, a coercive field of 1200 Oe, and a saturation magnetization of 1.7μB per formula unit. The...
Resource Type:: Article
Full Text:: magnetic properties of LaRh1/2Mn1/2O3 thin films W. C. Sheets,1 A. E. Smith,2 M. A. Subramanian,2 and W

Topotactic Reduction and Reoxidation of Hexagonal RCu0.5Ti0.5O3 (R =Y, Eu-Lu) Phases

Creator:: Jiang, Peng, Berthelot, Romian, Li, Jun, Sleight, A. W., and Subramanian, M. A.
Abstract:: Hexagonal AMO₂ and AMO₃ phases have the same basic structure, and intermediate compositions for this structure have been prepared by topotactic oxidation of AMO₂ phases such as RCuO₂, where R is a trivalent rare earth cation. We now find that such intermediate phases can also be prepared by topotactic reduction...
Resource Type:: Article
Full Text:: Romain Bertholet: berthelot.rom@gmail.com Jun Li: jli100@yahoo.com A. W. Sleight

C–H···O Non-Classical Hydrogen Bonding in the Stereomechanics of Organic Transformations: Theory and Recognition

Creator:: Johnston, Ryne C. and Cheong, Paul Ha-Yeon
Abstract:: This manuscript describes the role of non-classical hydrogen bonds (NCHBs), specifically C–H···O interactions, in modern synthetic organic transformations. Our goal is to point out the seminal examples where C–H···O interactions have been invoked as a key stereocontrolling element and to provide predictive value in recognizing future and/or potential C–H···O interactions...
Resource Type:: Article
Full Text:: RSC Article Template (Version 3.2) C–H···O Non

Catalyst selective and regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates: synthetic and computational studies

Creator:: Gould, Eoin, Walden, Daniel M., Kasten, Kevin, Johnston, Ryne C., Wu, Jiufeng, Slawin, Alexandra M., Mustard, Thomas J. L., Johnston, Brittany, Davies, Tony, Cheong, Paul Ha-Yeon, and Smith, Andrew D.
Abstract:: The regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates is described, with DMAP giving preferential N-carboxylation and triazolinylidenes promoting selective C-carboxylation (both with up to >99 : 1 regioselectivity). An enantioselective O- to C-carboxyl variant using NHC catalysis is demonstrated (up to 92% ee), while mechanistic and DFT studies outline...
Resource Type:: Article
Full Text:: . 38 S. Miertuš, E. Scrocco and J. Tomasi, Chem. Phys., 1981, 55, 117–129. 39 M. J. Frisch, G. W

Growth, optical and magnetic behavior of YMn0.35In0.65O3 thin film

Creator:: Mangalam, R. V. K., Smith, Andrew E., Boudin, S., McLoughlin, C., Subramanian, M. A., and Prellier, W.
Abstract:: The growth of YMn₀.₃₅In₀.₆₅O₃ thin films and their optical and magnetic behavior are reported. The YMn₀.₃₅In₀.₆₅O₃ thin film grows along the (0001) orientation with hexagonal structure similar to YMnO₃ on c-plane sapphire. The film shows paramagnetic behavior in the temperature range measured. The film exhibits a blue color due to...
Resource Type:: Article
Full Text:: M. A. Subramanian,2 and W. Prellier1,a 1Laboratoire CRISMAT, ENSICAEN, UMR 6508, CNRS, 6 Boulevard

Solid Solution Studies of Layered Honeycomb-Ordered Phases O3-Na3M2SbO6 (M = Cu, Mg, Ni, Zn)

Creator:: Schmidt, Whitney, Berthelot, Romain, Sleight, A. W., and Subramanian, M. A.
Abstract:: Complete solid solutions with the composition Na₃M₂₋ₓM’ₓSbO₆ where M, M’ = Cu, Mg, Ni, Zn have been synthesized by conventional solid state techniques and were investigated using X-ray diffraction, magnetism and optical measurements. All compositions crystallize in a monoclinic unit cell and exhibit a layered structure with a honeycomb cationic...
Resource Type:: Article
Full Text:: 1 Schmidt, W., Berthelot, R., Sleight, A., & Subramanian

Stability of the ferromagnetic ground state of La₂ MnNiO₆ against large compressive stress

Creator:: Haskel, D., Fabbris, G., Souza-Neto, N. M., van Veenendaal, M., Shen, G., Smith, A. E., and Subramanian, M. A.
Abstract:: The effect of quasi-hydrostatic pressure upon the ferromagnetic ground state of magnetodielectric, double- perovskite La₂ MnNiO₆ is investigated using x-ray absorption spectroscopy and diffraction measurements in a diamond anvil cell. The Mn-O-Ni superexchange interaction that gives rise to ferromagnetism in this cation- ordered structure is stable to at least 38...
Resource Type:: Article
Full Text:: absorption spectroscopy and diffraction measurements in a diamond anvil cell. The Mn-O-Ni superexchange

Measurement of the fusion probability, P[subscript CN], for hot fusion reactions

Creator:: Yanez, R., Loveland, W., Barrett, J. S., Yao, L., Back, B. B., Zhu, S., and Khoo, T. L.
Abstract:: Abstract: Background: The cross section for forming a heavy evaporation residue in fusion reactions depends on the capture cross section, the fusion probability, P[subscript CN], i.e., the probability that the projectile-target system will evolve inside the fission saddle point to form a completely fused system rather than reseparating (quasifission), and...
Resource Type:: Article
Full Text:: fusion probability, PCN, for hot fusion reactions R. Yanez, W. Loveland, J. S. Barrett, and L. Yao

High-resolution infrared studies of perdeutero-spiropentane, C₅D₈

Creator:: Erickson, Blake Alexander, Ju, X., Nibler, Joesph W., Beaudry, C. M., and Blake, T. A.
Abstract:: Perdeutero-spiropentane (C₅D₈) has been synthesized and infrared and Raman spectra are reported for the first time. Wavenumber assignments are made for most of the fundamental vibrational modes. Gas phase infrared spectra were recorded at a resolution (0.002 cm⁻¹) sufficient to resolve individual rovibrational lines and show evidence of strong Coriolis...
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Full Text:: . 22 8. D.E. Applequist, G.F. Fanta, B. W. Henrikson, J. Org. Chem. 23 (1958) 1715- 1716. 9

Structural and magnetic investigation of Fe3+ and Mg2+ substitution into the trigonal bipyramidal site of InGaCuO4

Creator:: Grajczyk, Rosa, Berthelot, Romain, Muir, Sean, Sleight, A. W., and Subramanian, M. A.
Abstract:: The solid solutions of InGa₁₋ₓFeₓCuO₄, InFeCu₁₋ₓMgₓO₄, and InGa₁₋ₓFeₓCu₁₋ₓMgₓO₄ were synthesized and characterized through the use of X – ray and neutron diffraction, and DC – magnetism measurements. All compositions of InGa₁₋ₓFeₓCuO₄ are single phase and crystallize in the R3m space group, but a transformation to the spinel InFeMgO₄ structure was...
Resource Type:: Article
Full Text:: Affiliations: Rosa Grajczyk, Romain Berthelot, Sean Muir, A. W. Sleight and M. A. Subramanian* Department

ScholarsArchive@OSU

Effect of oxygen concentration on the structural and magnetic properties of LaRh₁/₂Mn₁/₂O₃ thin films

Topotactic Reduction and Reoxidation of Hexagonal RCu0.5Ti0.5O3 (R =Y, Eu-Lu) Phases

C–H···O Non-Classical Hydrogen Bonding in the Stereomechanics of Organic Transformations: Theory and Recognition

Catalyst selective and regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates: synthetic and computational studies

Growth, optical and magnetic behavior of YMn0.35In0.65O3 thin film

Solid Solution Studies of Layered Honeycomb-Ordered Phases O3-Na3M2SbO6 (M = Cu, Mg, Ni, Zn)

Stability of the ferromagnetic ground state of La₂ MnNiO₆ against large compressive stress

Measurement of the fusion probability, P[subscript CN], for hot fusion reactions

High-resolution infrared studies of perdeutero-spiropentane, C₅D₈

Structural and magnetic investigation of Fe3+ and Mg2+ substitution into the trigonal bipyramidal site of InGaCuO4

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