Sökning: WFRF:(Venkateshwarlu Sarangi) >
Relaxor behavior an...
Relaxor behavior and electrothermal properties of Sn- And Nb-modified (Ba,Ca)TiO3 Pb-free ferroelectric
-
- Venkateshwarlu, Sarangi (författare)
- City University of Hong Kong
-
- Nayak, Sanjib (författare)
- City University of Hong Kong
-
- Marlton, Frederick P. (författare)
- Aarhus University
-
visa fler...
-
- Weyland, Florian (författare)
- Technical University of Darmstadt
-
- Novak, Nikola (författare)
- Jožef Stefan Institute
-
- Maurya, Deepam (författare)
- Virginia Polytechnic Institute and State University
-
- Veerabhadraiah, Yashaswini (författare)
- City University of Hong Kong
-
- Borkiewicz, Olaf (författare)
- Argonne National Laboratory
-
- Beyer, Kevin A. (författare)
- Argonne National Laboratory
-
- Jørgensen, Mads R.V. (författare)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Aarhus University
-
- Pramanick, Abhijit (författare)
- City University of Hong Kong
-
visa färre...
-
(creator_code:org_t)
- 2020-02-10
- 2020
- Engelska 11 s.
-
Ingår i: Journal of Materials Research. - : Springer Science and Business Media LLC. - 0884-2914 .- 2044-5326. ; 35:8, s. 1017-1027
- Relaterad länk:
-
http://dx.doi.org/10... (free)
-
visa fler...
-
https://www.cambridg...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Relaxor ferroelectrics have drawn attention for possible applications in solid-state cooling and thermal energy harvesting, owing to their electrothermal energy conversion properties. Here, we have synthesized and characterized the structure-property correlations of a new Sn- and Nb-doped (Ba,Ca)TiO3 relaxor ferroelectric with large pyroelectric and electrocaloric effects over a broad temperature range. We observed two peaks for the temperature-dependent pyroelectric coefficient: (i) -(δP/δT) ∼ 563 μC/(m2 K) at T ∼ 270 K and (ii) -(δP/δT) ∼ 1021 μC/(m2 K) at T ∼ 320 K. In addition, a broad peak for electrocaloric temperature change is observed near 320 K with a relative cooling power of 1/417 J/kg. These properties could be correlated to structural changes observed using X-ray diffraction at two different temperature ranges in the material. Analysis of high-energy X-ray scattering and specific heat capacity data revealed a transition from the cubic to tetragonal phase near Tm ∼ 320 K, whereas an additional increase in the tetragonality (c/a) of the polar phase is observed below Ts ∼ 270 K.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- electrical properties
- ferroelectric
- X-ray diffraction
Publikations- och innehållstyp
- for (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Venkateshwarlu, ...
-
Nayak, Sanjib
-
Marlton, Frederi ...
-
Weyland, Florian
-
Novak, Nikola
-
Maurya, Deepam
-
visa fler...
-
Veerabhadraiah, ...
-
Borkiewicz, Olaf
-
Beyer, Kevin A.
-
Jørgensen, Mads ...
-
Pramanick, Abhij ...
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Kemi
-
och Materialkemi
- Artiklar i publikationen
-
Journal of Mater ...
- Av lärosätet
-
Lunds universitet