3)O3-0.1PbTiO3 bulk relaxor ferroelectric ceramic

Manuel Gesù Del Duca (Avtor), Jaka Tušek (Avtor), Angelo Maiorino (Avtor), Lovro Fulanović (Avtor), Andraž Bradeško (Avtor), Uroš Plaznik (Avtor), Barbara Malič (Avtor), Ciro Aprea (Avtor), Andrej Kitanovski (Avtor)

Povzetek

Electrocaloric refrigeration shows potential as a viable alternative to vapor-compression and/or thermo-electric refrigeration. One of the main challenges that need to be addressed in electrocaloric technology is the fatigue behavior of electrocaloric materials, in terms of both structural and functional aspects. Here, a comprehensive evaluation of the fatigue behavior of the 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3 (PMN-10PT) bulk relaxor ferroelectric (or shortly relaxor) ceramic at room temperature is performed. First, the temperature-change dependence on the slew rate was studied. It is shown that the adiabatic conditions are well approached at the slew rate above 1 kVs-1, at which the adiabatic temperature change of 1.3 K was measured at the electric field change of 90 kVcm-1. Then, the durability limits (i.e., the fatigue life) of ten PMN-10PT samples were investigated during unipolar electric field cycling. The results showed that the material could withstand up to 106 cycles at the electric field change of 90 kVcm-1 with only minor degradation of the functional properties (less than 5% of the maximum adiabatic temperature change). Hence, PMN-10PT can be considered as a promising material for use in an electrocaloric cooling device, but some critical issues that caused premature failure of several samples would need to be further addressed and improved.

Ključne besede

electrocaloric effect;fatigue behavior;ferroelectric ceramic;

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FS - Fakulteta za strojništvo
UDK:	519.6:669.15-198(045)
COBISS:	31087619
ISSN:	0021-8979
Št. ogledov:	342
Št. prenosov:	215
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	elektrokalorični učinek;doba trajanja;feroelektrična keramika;
Vrsta dela (COBISS):	Članek v reviji
Konec prepovedi (OpenAIRE):	2021-10-08
Strani:	str. 1-9
Letnik:	ǂVol. ǂ128
Zvezek:	ǂiss. ǂ10
Čas izdaje:	Sep. 2020
DOI:	10.1063/5.0003250
ID:	12063379