Ferroelectronics Lab

Understanding and utilizing non-volatile properties of materials

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Nguyen presents a poster at the VEF fellows and scholars conference.

February 9, 2017 By John Heron

Congratulations to Nguyen, who presented her poster “alpha-Cr2O3 Thin Films Grown by Pulsed Laser Deposition” at the VEF fellows and scholars conference in Phoenix AZ.

Abstract:
Magnetoelectric materials have been of interest because of their potential for low-power spintronic devices using electric field switching. One possible candidate is antiferromagnetic α-Cr2O3, which possesses an uncompensated surface magnetization. Recent significant results of magnetoelectric switching are mostly done in bulk single crystal α-Cr2O3. In this work, we study the pulsed laser deposition of α-Cr2O3 on Al2O3 (0001) substrate in order to find the appropriate conditions for a smooth and high quality thin film for technological adoption. The heterostructure of Pt/α-Cr2O3/metal is deposited in order to study magnetic and magnetoelectric properties of α-Cr2O3.

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Nguyen is awarded the Chia-Lun Lo fellowship! 

November 16, 2016 By John Heron

Congratulations to Nguyen Vu, who was awarded the Chia-Lun Lo fellowship! The Chia-Lun Lo fellowship is awarded to exemplary international graduate students at the University of Michigan. The award is quite selective with only ~ 25 awards given per year campus wide.

Nguyen

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Davide gets second place poster at AVS 2016!

November 10, 2016 By John Heron

Congratulations to Davide, a joint Heron and Goldman student, for winning second place at the 2016 American Vacuum Society (AVS) conference in Nashville, Tennessee! Davide’s poster was titled “Quantum Enoki Mushrooms”. Davide also contributed to the conference with an oral presentation. He presented work on the synthesis of indium tin oxide nanowires by pulsed laser deposition.

davides-poster

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Useful Programs

October 14, 2016 By John Heron

Useful Programs: http://mybinder.org:/repo/meisep/ferroelectronicsprograms

The Stoner-Wohlfarth Model describes the hysteresis of single domain ferromagnets when an electric field is applied at some angle θ from the easy axis. An interactive python code to quantitatively simulate this hysteresis is available from the depository above.

The reciprocal lattice of a crystal represents the Fourier transform of real space lattice and is used to calculate the expected diffraction pattern from X-ray or neutron diffraction. Operations in real space and reciprocal space have an inverse relationship (increasing length in real space decreases it in reciprocal space) which can oftentimes be difficult to visualize. An interactive python code comparing real space and reciprocal space for arbitrary angles and lengths is available at the depository above.

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Recent work on new room temperature multiferroics

October 4, 2016 By John Heron

Recent work on new room temperature multiferroics is highlighted by Nature and the University of Michigan!

Our collaborative work with UC Berkeley and Cornell University was recently highlighted in Nature: News and Views by Manfred Fiebig and by the University of Michigan! The highlights are in regards to the work recently published in Nature (“Atomically engineered ferroic layers yield a room-temperature magnetoelectric multiferroic”).

Fiebig’s article is titled, “Condensed-matter physics: Multitasking materials from atomic templates”.

The article written by the University of Michigan is titled, “ ‘Atomic sandwiches’ could make computers 100x greener”.

A false-colored electron microscopy image shows alternating lutetium
A false-colored electron microscopy image shows alternating lutetium (orange) and iron (blue) atomic planes.
Credit: Emily Ryan and Megan Holtz/Cornell

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News

  • New Publication! “Adaptive Magnetoactive Soft Composites for Modular and Reconfigurable Actuators” March 27, 2023
  • 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

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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! “Adaptive Magnetoactive Soft Composites for Modular and Reconfigurable Actuators”

March 27, 2023 By Matt Webb

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

November 10, 2022 By Matt Webb

Contact

Ferroelectronics Lab
Address: 2030 H.H. Dow

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