Ferroelectronics Lab

Understanding and utilizing non-volatile properties of materials

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Peter at LANL

November 14, 2018 By John Heron

Peter is off to Los Alamos National Laboratory for several months where he will be working with Aiping Chen at the Center for Integrated Nanotechnologies (CINT) on growth kinetics of entropy stabilized oxides.

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Sieun passes candidacy exam!

September 21, 2018 By John Heron

Congratulations to Sieun for passing her candidacy exam on September 4th.

Doping is an essential step in semiconductor technology to achieve the desired type and level of electrical conductivity. Thus, predicting both n-type or p-type dopability of a material is a prerequisite to exploit the material for electronic application. First-principles calculations are a powerful tool to understand point-defect properties since experimental studies to identify and characterize defects at the atomic scale are challenging. To predict n-type and p-type dopability of an unexplored wide bandgap material, we investigated the thermal stability and charge state of various intentional dopants, the issues regarding carrier localization, and charge compensation from native defects.

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Steve gives a talk at APS March Meeting

March 9, 2018 By John Heron

This past week, Steve gave a contributed talk on theoretical calculations of strain dependent spin orbit splitting in PtMn3 and its effect on intrinsic transport properties.

Abstract: Efficient charge-to-spin current conversion in materials is crucial to the development of spintronic memory or logic devices. A promising and established method of spin current generation is the injection of charge current through a crystal with a strong intrinsic spin Hall conductivity. Recently, a class of antiferromagnets with the composition XMn3, where X={Pt, Ir, Rh}, have been identified as materials with large intrinsic spin Hall conductivities stemming from their non-trivial spin order. The exact role of antiferromagnetic spin texture on the generated spin current, however, is not fully understood. Temperature-dependent triangular AFM – collinear AFM phase transitions in chemically ordered PtMn3 can be exploited to probe this directly. Here, we report on the growth and magneto-transport measurement of ordered PtMn3 thin films. Harmonic transport measurement techniques utilizing spin-transfer torques were performed to determine the spin and anomalous Hall conductivities at select temperatures.

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Peter’s artwork chosen to hang in the MSE department

March 9, 2018 By John Heron


Some of Peter’s artwork submitted to the annual calendar competition was chosen to hang in the hallway of the HH Dow building, home of the UM MSE department. If you are walking through, check it out!

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Peter gives a talk at the UM college of engineering graduate student coffee hour

February 20, 2018 By John Heron

Peter gave an invited talk at the recent college of engineering graduate student coffee hour on the novel and distortion dependent magnetic properties of entropy-stabilized oxides. Every two weeks, the graduate student council gives two graduate students the opportunity to give talks at this cross-department meeting.

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News

  • New Publication! “Geometric defects induced by strain relaxation in thin film oxide superlattices.” November 10, 2022
  • New Publication! “Nanophotonic control of thermal emission under extreme temperatures in air” September 29, 2022
  • New Publication! “Germanium dioxide: A new rutile substrate for epitaxial film growth” September 1, 2022

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About

Our work is multidisciplinary. We employ concepts and tools from the fields of materials science, chemistry, physics and electrical engineering to develop new methods to investigate and engineer … Read More

News

New Publication! “Geometric defects induced by strain relaxation in thin film oxide superlattices.”

November 10, 2022 By Matt Webb

New Publication! “Nanophotonic control of thermal emission under extreme temperatures in air”

September 29, 2022 By Matt Webb

Contact

Ferroelectronics Lab
Address: 2030 H.H. Dow

T: (734) 763-6914
E: jtheron@umich.edu
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