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Selected Works

Condensed Matter Physics

Deborah L. Schlagel

Physics and Astronomy

Articles 1 - 2 of 2

Full-Text Articles in Physics

17o And 51v Nmr For The Zigzag Spin-1 Chain Compound Cav2o4, X. Zong, B. J. Suh, A. Niazi, J.-Q. Yan, Deborah L. Schlagel, Thomas A. Lograsso, David C. Johnston Aug 2014

17o And 51v Nmr For The Zigzag Spin-1 Chain Compound Cav2o4, X. Zong, B. J. Suh, A. Niazi, J.-Q. Yan, Deborah L. Schlagel, Thomas A. Lograsso, David C. Johnston

Deborah L. Schlagel

51V NMR studies on CaV2O4 single crystals and 17O NMR studies on 17O-enriched powder samples are reported. The temperature dependences of the 17O NMR linewidth and nuclear spin-lattice relaxation rate give strong evidence for a long-range antiferromagnetic transition at TN=78 K in the powder. Magnetic susceptibility measurements show that TN=69 K in the crystals. A zero-field 51V NMR signal was observed at low temperatures (f≈237 MHz at 4.2 K) in the crystals. The field-swept spectra with the field in different directions suggest the presence of two antiferromagnetic substructures. Each substructure is collinear, with the easy axes ...


Relation Between Ga Ordering And Magnetostriction Of Fe-Ga Alloys Studied By X-Ray Diffuse Scattering, Y. Du, Mianliang Huang, S. Chang, Deborah L. Schlagel, Thomas A. Lograsso, Robert J. Mcqueeney Aug 2014

Relation Between Ga Ordering And Magnetostriction Of Fe-Ga Alloys Studied By X-Ray Diffuse Scattering, Y. Du, Mianliang Huang, S. Chang, Deborah L. Schlagel, Thomas A. Lograsso, Robert J. Mcqueeney

Deborah L. Schlagel

Transmission synchrotron diffraction was employed to characterize the Ga ordering in magnetostrictive Fe100−xGax alloys with Ga concentrations from 0 to 20.3 at. %. The experiments focused on the development of atomic short-range ordering (SRO) by analysis of the diffuse scattering appearing at superlattice positions of the D03 ordered alloy structure. No SRO was found for Ga concentrations less than 4 at. %. Between 13 and 20.3 at. %, D03-type SRO clusters are observed whose size increases with Ga concentration for both slow-cooled and quenched samples. Thermal quenching of the samples suppresses the cluster sizes when compared to slow-cooled samples of ...