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Title: Method for fabricating high aspect ratio structures in perovskite material

Abstract

A method of fabricating high aspect ratio ceramic structures in which a selected portion of perovskite or perovskite-like crystalline material is exposed to a high energy ion beam for a time sufficient to cause the crystalline material contacted by the ion beam to have substantially parallel columnar defects. Then selected portions of the material having substantially parallel columnar defects are etched leaving material with and without substantially parallel columnar defects in a predetermined shape having high aspect ratios of not less than 2 to 1. Etching is accomplished by optical or PMMA lithography. There is also disclosed a structure of a ceramic which is superconducting at a temperature in the range of from about 10.degree. K. to about 90.degree. K. with substantially parallel columnar defects in which the smallest lateral dimension of the structure is less than about 5 microns, and the thickness of the structure is greater than 2 times the smallest lateral dimension of the structure.

Inventors:
; ; ;
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174550
Patent Number(s):
6,638,895
Application Number:
09/696,050
Assignee:
University Of Chicago
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Karapetrov, Goran T., Kwok, Wai-Kwong, Crabtree, George W., and Iavarone, Maria. Method for fabricating high aspect ratio structures in perovskite material. United States: N. p., 2003. Web.
Karapetrov, Goran T., Kwok, Wai-Kwong, Crabtree, George W., & Iavarone, Maria. Method for fabricating high aspect ratio structures in perovskite material. United States.
Karapetrov, Goran T., Kwok, Wai-Kwong, Crabtree, George W., and Iavarone, Maria. Tue . "Method for fabricating high aspect ratio structures in perovskite material". United States. https://www.osti.gov/servlets/purl/1174550.
@article{osti_1174550,
title = {Method for fabricating high aspect ratio structures in perovskite material},
author = {Karapetrov, Goran T. and Kwok, Wai-Kwong and Crabtree, George W. and Iavarone, Maria},
abstractNote = {A method of fabricating high aspect ratio ceramic structures in which a selected portion of perovskite or perovskite-like crystalline material is exposed to a high energy ion beam for a time sufficient to cause the crystalline material contacted by the ion beam to have substantially parallel columnar defects. Then selected portions of the material having substantially parallel columnar defects are etched leaving material with and without substantially parallel columnar defects in a predetermined shape having high aspect ratios of not less than 2 to 1. Etching is accomplished by optical or PMMA lithography. There is also disclosed a structure of a ceramic which is superconducting at a temperature in the range of from about 10.degree. K. to about 90.degree. K. with substantially parallel columnar defects in which the smallest lateral dimension of the structure is less than about 5 microns, and the thickness of the structure is greater than 2 times the smallest lateral dimension of the structure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {10}
}

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Works referenced in this record:

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