“Whoa! It's like Spotify but for academic articles.”

Instant Access to Thousands of Journals for just $40/month

Get 2 Weeks Free

Enhanced dielectric responses in Mg-doped CaCu 3 Ti 4 O 12



We report the effects of the Mg doping on the dielectric properties of CaCu 3 Ti 4 O 12 CaCu 3 Ti 4 O 12 in the frequency range of 200 Hz–200 kHz and in the temperature range of 58–473 K. It is found that the incorporations of Mg 2+ Mg 2 + result in increases in the dielectric constant by 12%–20% and decreases in the dielectric loss by 41%–64% (with the minimum of 0.042 for CaCu 2.7 Mg 0.3 Ti 4 O 12 CaCu 2.7 Mg 0.3 Ti 4 O 12 ) at room temperature and at 1 kHz. The x-ray photoemission spectroscopy measurements reveal that the content of Cu 3+ Cu 3 + increases with the increasing concentration of Mg 2+ Mg 2 + . The enhanced dielectric response may be related to the influence of Cu 3+ Cu 3 + and/or Mg 2+ Mg 2 + . In other words, Mg 2+ Mg 2 + is an effective ion to optimize the dielectric properties of CaCu 3 Ti 4 O 12 CaCu 3 Ti 4 O 12 .



Journal of Applied PhysicsAmerican Institute of Physics

Published: Oct 1, 2008

Keywords: calcium compounds; copper compounds; dielectric losses; dielectric materials; doping; magnesium compounds; permittivity; X-ray photoelectron spectra

DOI: 10.1063/1.2989124

Free Preview of First Page

Loading next page...

You're reading a free preview. Subscribe to read the entire article.

And millions more from thousands of peer-reviewed journals, for just $40/month

Get 2 Weeks Free

To be the best researcher, you need access to the best research

  • With DeepDyve, you can stop worrying about how much articles cost, or if it's too much hassle to order — it's all at your fingertips. Your research is important and deserves the top content.
  • Read from thousands of the leading scholarly journals from Springer, Elsevier, Nature, IEEE, Wiley-Blackwell and more.
  • All the latest content is available, no embargo periods.

Stop missing out on the latest updates in your field

  • We’ll send you automatic email updates on the keywords and journals you tell us are most important to you.
  • There is a lot of content out there, so we help you sift through it and stay organized.