scholarly journals The model case of an oxygen storage catalyst – non-stoichiometry, point defects and electrical conductivity of single crystalline CeO2–ZrO2–Y2O3 solid solutions

2014 ◽  
Vol 16 (46) ◽  
pp. 25583-25600 ◽  
Author(s):  
Jens-Peter Eufinger ◽  
Maximilian Daniels ◽  
Kerstin Schmale ◽  
Stefan Berendts ◽  
Gregor Ulbrich ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Solid Solutions ◽  
Point Defects ◽  
Defect Chemistry ◽  
Oxygen Storage ◽  
Defect Model ◽  
Model Case ◽  
Single Crystalline ◽  
Storage Catalyst

Defect-chemistry of the oxygen storage compound CeO2–ZrO2–Y2O3 has been investigated with conductivity, EMF and non-stoichiometry measurements and the observed non-ideality was described by an unconventional defect-model.

Defect Chemistry of Oxide Nanomaterials with High Surface Area: Ordered Mesoporous Thin Films of the Oxygen Storage Catalyst CeO2–ZrO2

ACS Nano ◽  
2013 ◽  
Vol 7 (4) ◽  
pp. 2999-3013 ◽  
Author(s):  
Pascal Hartmann ◽  
Torsten Brezesinski ◽  
Joachim Sann ◽  
Andriy Lotnyk ◽  
Jens-Peter Eufinger ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Defect Chemistry ◽  
Oxygen Storage ◽  
Ordered Mesoporous ◽  
Mesoporous Thin Films ◽  
Storage Catalyst

scholarly journals Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 398
Author(s):  
Yuriy Suhak ◽  
Dmitry Roshchupkin ◽  
Boris Redkin ◽  
Ahsanul Kabir ◽  
Bujar Jerliu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Solid Solutions ◽  
Elevated Temperatures ◽  
Relaxation Mechanism ◽  
Bulk Acoustic Wave ◽  
Single Crystalline ◽  
Acoustic Resonators ◽  
Acoustic Loss ◽  
Acoustic Wave Resonators ◽  
Bulk Acoustic Wave Resonators

Electrical conductivity and acoustic loss Q−1 of single crystalline Li(Nb,Ta)O3 solid solutions (LNT) are studied as a function of temperature by means of impedance spectroscopy and resonant piezoelectric spectroscopy, respectively. For this purpose, bulk acoustic wave resonators with two different Nb/Ta ratios are investigated. The obtained results are compared to those previously reported for congruent LiNbO3. The temperature dependent electrical conductivity of LNT and LiNbO3 show similar behavior in air at high temperatures from 400 to 700 °C. Therefore, it is concluded that the dominant transport mechanism in LNT is the same as in LN, which is the Li transport via Li vacancies. Further, it is shown that losses in LNT strongly increase above about 500 °C, which is interpreted to originate from conductivity-related relaxation mechanism. Finally, it is shown that LNT bulk acoustic resonators exhibit significantly lower loss, comparing to that of LiNbO3.

Electrical conductivity and structure of solid solutions formed in the La0.8Sr0.2MnO3–La0.95Ni0.6Fe0.4O3 system

2008 ◽  
Vol 179 (27-32) ◽  
pp. 1432-1435 ◽  
Author(s):  
Elena Konysheva ◽  
John T.S. Irvine ◽  
Astrid Besmehn
Keyword(s):  
Electrical Conductivity ◽  
Solid Solutions

Direct evaluation of hole effective mass of SnS–SnSe solid solutions with ARPES measurement

2021 ◽  
Author(s):  
Issei Suzuki ◽  
Zexin Lin ◽  
Sakiko Kawanishi ◽  
Kiyohisa Tanaka ◽  
Yoshitaro Nose ◽  
...  
Keyword(s):  
Effective Mass ◽  
Valence Band ◽  
Thermoelectric Properties ◽  
Solid Solutions ◽  
Photoemission Spectroscopy ◽  
Direct Evaluation ◽  
Hole Effective Mass ◽  
Single Crystalline ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Effective Masses

Valence band dispersions of single-crystalline SnS1-xSex solid solutions were observed by angle-resolved photoemission spectroscopy (ARPES). The hole effective masses, crucial factors in determining thermoelectric properties, were directly evaluated. They decrease...

Sign in / Sign up

Export Citation Format

Share Document