1 / 2

Design of New Polar Oxide Materials P. Shiv Halasyamani, University of Houston, DMR 0652150

Design of New Polar Oxide Materials P. Shiv Halasyamani, University of Houston, DMR 0652150. Translational Motor (Up/Down). Polar Materials exhibit a variety of technologically important properties including piezoelectricity and ferroelectricity. Rotation Motor. Seed Rod (Pt wire).

paloma
Télécharger la présentation

Design of New Polar Oxide Materials P. Shiv Halasyamani, University of Houston, DMR 0652150

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Design of New Polar Oxide MaterialsP. Shiv Halasyamani, University of Houston, DMR 0652150 Translational Motor (Up/Down) • Polar Materials exhibit a variety of technologically important properties including piezoelectricity and ferroelectricity. Rotation Motor Seed Rod (Pt wire) • New polar oxides may be synthesized by utilizing cations susceptible to second-order Jahn-Teller (SOJT) distortions. These cations are d0 transition metals (Ti4+, Nb5+, W6+, etc.) and lone-pair cations (Se4+, Te4+, Sb3+, etc.). Observation Window Heating Coil • Using this methodology, we have synthesized and characterized a variety of new piezoelectric oxides, including, Li2Ti(IO3)6, Na2Ti(IO3)6, and large single crystals of Na2TeW2O9. Crystal Seed Flux Pt Crucible Thermocouple • We have grown > cm size single crystals of Na2TeW2O9, a piezoelectric oxide material, through a top-seeded solution growth (TSSG) technique. A schematic of the furnace is shown to the right. Crystal Insulation

  2. Design of New Polar Oxide MaterialsP. Shiv Halasyamani, University of Houston, DMR 0652150 Funding from the NSF through the Division of Materials Research supports an interdisciplinary and broad research and educational program in inorganic solid state materials chemistry. • Undergraduates:Antonio Pontifes* and Stephen Tam *Under-represented group member • Graduate Students:Jaewook Baek (MS 2009 – Chief Chemist ExperTox), Hong Young Chang (PhD 2009 – Post-doctoral Associate at UT-Austin), Jeongho Yeon (PhD 2011), Sau Doan Nguyen (PhD 2012), Sun-woo Kim (PhD 2013) • Post-doctoral Associates:Dr. Jun Ho Kim (PhD 2006, MSU – DC Chemicals, Seoul, Korea), Dr. Sang-Hwan Kim (PhD 2007, Arizona State University), Dr. Weiguo Zhang (PhD 2009, Shandong University) • Collaborators:Prof. Alexander Norquist (Haverford College); Prof. Simon Clarke (University of Oxford); Prof. Michael Hayward (University of Oxford); Prof. Patrick Woodward (Ohio State University); Prof. Ram Seshadri (University of California – Santa Barbara); Prof. Santiago Alvarez (University of Barcelona); Prof. Matthew Rosseinsky (University of Liverpool); Prof. Yoshiyuki Inaguma (Gakushuin University) Large Single Crystal of Na2TeW2O9

More Related