Dielectric and polarization experiments in high loss dielectrics: A word of caution Public Deposited

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  • The recent quest for improved functional materials like high permittivity dielectrics and/or multiferroics has triggered an intense wave of research. Many materials have been checked for their dielectric permittivity or their polarization state. In this report, we call for caution when samples are simultaneously displaying an insulating behavior and a defect-related conductivity. Many oxides containing mixed valent cations or oxygen vacancies fall into this category. In such cases, most of the standard experiments may result in an effective high dielectric permittivity, which may not be related to ferroelectric polarization. Here we list a few examples of possible discrepancies between measured parameters and their expected microscopic origin.
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  • Maglione, M., & Subramanian, M. A. (2008, July 21). Dielectric and polarization experiments in high loss dielectrics: A word of caution. Applied Physics Letters, 93, 032902-1-032902-3. doi:10.1063/1.2949752
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  • description.provenance : Made available in DSpace on 2011-09-23T18:05:03Z (GMT). No. of bitstreams: 1 SubramanianMas.Chemistry.DielectricPolarizationExperiments.pdf: 269496 bytes, checksum: f70d138a454f254962ad1c1e08c93315 (MD5) Previous issue date: 2008-07-21
  • description.provenance : Submitted by Sue Kunda (sue.kunda@oregonstate.edu) on 2011-09-23T18:04:31Z No. of bitstreams: 1 SubramanianMas.Chemistry.DielectricPolarizationExperiments.pdf: 269496 bytes, checksum: f70d138a454f254962ad1c1e08c93315 (MD5)
  • description.provenance : Approved for entry into archive by Sue Kunda(sue.kunda@oregonstate.edu) on 2011-09-23T18:05:03Z (GMT) No. of bitstreams: 1 SubramanianMas.Chemistry.DielectricPolarizationExperiments.pdf: 269496 bytes, checksum: f70d138a454f254962ad1c1e08c93315 (MD5)

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