Optical Conductivity of Mayenite : From Insulator to Metal

  title={Optical Conductivity of Mayenite : From Insulator to Metal},
  author={Ricardo P S M Lobo and Nicole Bontemps and Mariana I. Bertoni and Thomas O Mason and Kenneth R Poeppelmeier and Arthur J. Freeman and M. S. Park and Julia E. Medvedeva},
Mayenite-based oxides [12CaO·7Al2O3] starting from [Ca24Al28O64] 4+ + 2O2− (insulator) and subsequently annealed so as to obtain [Ca24Al28O64] 4+ + 4e− (metal) were studied by reflectance and transmission on seven samples with dc conductivities spanning the range 10−10 to 1500 Ω−1 cm−1. Three of them are essentially insulating. The remaining display an increasing dc conductivity as the electron concentration increases. A set of phonons in the infrared below 0.15 eV and an intense line in the… CONTINUE READING


Publications citing this paper.


Publications referenced by this paper.
Showing 1-10 of 59 references

Thermionic Electron Emission from a Mayenite Electride Metallic Titanium Composite Cathode

T. Yoshizumi, K. Hayashi
Appl . Phys . Express • 2013

Nitrogen and Hydrogen Defect Equilibria in Ca 12 Al 14 O 33 : A Combined Experimental and Computational Study

J. Polfus, K. Toyoura, +3 authors R. Haugsrud
J . Mater . Chem . • 2012

Heavy Doping of H − ion in 12 CaO · 7 Al 2 O 3

K. Hayashi
J . Solid State Chem . • 2011

Defect Chemistry of the Mixed Conducting Cage Compound Ca 12 Al 14 O 33

J. Janek, D. Lee
J . Korean Ceram . Soc . • 2010

Oxygen Ion Conduction

H. Hosono, K. Hayashi, K. Kajihara, P. V. Sushko, A. L. Shluger
Ca12Al14O33. J. Korean Ceram. Soc. 2010, • 2010

Solid State Syntheses

K. Hayashi, N. Ueda, +3 authors H. Hosono
(12CaO·7Al2O3. Phys. Chem. Chem. Phys. 2010, • 2010

Conduction Mechanism and Possibility of O− Fast Conduction

A. L. Shluger, K. P. McKenna, P. V. Sushko, D. M. Ramo, A. V. Kimmel
Solid State Ionics • 2009

Heavy Doping of H− ion

K. Hayashi
Ca12Al14O33. J. Phys. Chem. C • 2009

Similar Papers

Loading similar papers…