Other Scholarly Content

 

Synthesis and High Temperature Thermoelectric Characterization of Y₁₋ₓCaₓCoO₃ and YCo₁₋ₓRhₓO₃ Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/defaults/8p58pf568

Descriptions

Attribute NameValues
Alternative Title
Creator
Abstract
  • In this study, the effects of A and B site cation substitution of the distorted perovskite YCoO₃ on crystal structure and thermoelectric properties were investigated. Polycrystalline samples of Y₁₋ₓCaₓCoO₃ (0 ≤ x ≤ 0.20) and YCo₁₋ₓRhₓO₃ (0 ≤ x ≤ 1.0) were prepared by solid state reaction. Optimal synthesis conditions were determined to be 1198K in oxygen for Y₁₋ₓCaₓCoO₃, and 1273K/1373K in oxygen/vacuum for YCo₁₋ₓRhₓO₃. Powder x-ray diffraction patterns were collected and all samples were confirmed to be of the same orthorhombic space group (Pbnm) as the parent compound. Scanning electron microscopy and energy dispersive spectrometry were performed on Y₁₋ₓCaₓCoO₃ and both the nominal phase as well as Y₂O₃ was discovered. Very small amounts of Y₂O₃ impurity were detected in all samples by x-ray diffraction, consistent with previous studies. Crystal refinements, as well as electrical and thermal conductivity and Seebeck coefficient measurements from 300K to 800K are currently in progress.
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Advisor
Non-Academic Affiliation
Rights Statement
Funding Statement (additional comments about funding)
  • National Science Foundation; The City College of New York; Oregon State University
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2013-06-04T20:30:15Z (GMT) No. of bitstreams: 1 Synthesis and Thermoelectric Characterization of Y1-xCaxCoO3 and YCo1-xRhxO3.pdf: 1494221 bytes, checksum: 0152e79c34a931410bb68e68762faa28 (MD5)
  • description.provenance : Made available in DSpace on 2013-06-04T20:30:15Z (GMT). No. of bitstreams: 1 Synthesis and Thermoelectric Characterization of Y1-xCaxCoO3 and YCo1-xRhxO3.pdf: 1494221 bytes, checksum: 0152e79c34a931410bb68e68762faa28 (MD5)
  • description.provenance : Submitted by Colin Dickens (dickensc@onid.orst.edu) on 2013-06-04T16:54:01Z No. of bitstreams: 1 Synthesis and Thermoelectric Characterization of Y1-xCaxCoO3 and YCo1-xRhxO3.pdf: 1494221 bytes, checksum: 0152e79c34a931410bb68e68762faa28 (MD5)

Relationships

Parents:

This work has no parents.

In Collection:

Items