Research Themes +
Energy Technologies Area (ETA) researchers are continually building on the strong scientific foundation we have developed over the past 50 years. We address the world’s most pressing climate challenges by bringing to market energy-efficient innovations across the buildings, transportation, and industrial sectors. ETA is at the forefront of developing better batteries for electric vehicles; improving the country's aging electrical grid and innovating distributed energy and storage solutions; developing grid-interactive, efficient buildings; and providing the most comprehensive market and data analysis worldwide for renewable technologies like wind and solar.
Strategic Initiatives +
The Energy Technologies Area (ETA) Strategic Plan is the guiding force for our research and development for the next ten years. It clearly charts a path toward clean-energy solutions and focuses on five detailed Strategic Initiatives. The Plan provides an in-depth look at how ETA is accelerating research to provide affordable, clean energy to all while accomplishing deep, economy-wide decarbonization, looking to avoid a rise in global average temperature while simultaneously developing solutions to increase humanity's resilience to extreme weather volatility.
Publications
News +
For media inquiries,
please contact ETA
Interim Communications Manager
Kiran Julin

kjulin@lbl.gov
About Us +
The Energy Technologies Area (ETA) is unique in translating fundamental scientific discoveries into scalable technology adoption. Our approach combines an understanding of the marketplace and the role of state and federal regulation and policies. ETA's research drives real-world, practical results that affect and improve the everyday lives of Americans and those across the globe. Saving energy and battling the Climate Crisis are key to the foundation of our research, which is driven by technoeconomic analysis and in-lab experimentation and discovery.

Microstructure studies of a-axis oriented YBa2Cu3O7-x-PrBa2Cu3O7-y heterostructures

Publication Type

Journal Article

Authors

Ramesh, Ramamoorthy, A. Inam, D.L. Hart, C.T. Rogers

DOI

10.1016/0921-4534(90)90331-8

Abstract

We have studied the microstructure of epitaxial a,b-axis oriented YBCO-PrBCO heterostructures using transmission electron microscopy. These films, grown on single crystal [001] SrTiO3 or LaAlO3 by pulsed laser deposition, have a Tc,0 of 84 K as determined by DC resistivity and AC susceptibility measurements. The PrBCO layer acts as a good buffer and template layer for the subsequent growth of a-axis oriented YBCO layer. Planar sections reveal the existence of two 90° rotated variants, with a small (<5%) fraction of c-axis oriented regions. These films are relatively free of polytypoidic defects, compared to c-axis oriented films. Selected area electron diffraction patterns obtained from cross sections and planar sections reveal the orientation relationship in which the a-axis of the YBCO layer and the b-axis of the PrBCO layer are normal to the substrate surface. © 1990.

Journal

Physica C: Superconductivity and its applications

Volume

170

Year of Publication

1990

ISSN

09214534

Notes

cited By 25

Research Areas

Ramesh Lab