Orientation dependence of electrocaloric effects in Pb(Zn1/3Nb2/3)-PbTiO3 single crystals | Zendy

Rami Chukka | Zendy; Suresh Kumar Vandrangi | Zendy; Zuhuang Chen | Zendy; Lü You | Zendy; Junling Wang | Zendy; Ping Yang | Zendy; Lang Chen | Zendy

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Orientation dependence of electrocaloric effects in Pb(Zn1/3Nb2/3)-PbTiO3 single crystals

Author(s) -

Rami Chukka,

Suresh Kumar Vandrangi,

Zuhuang Chen,

Lü You,

Junling Wang,

Ping Yang,

Lang Chen

Publication year - 2013

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4816441

Subject(s) - materials science , electrocaloric effect , ferroelectricity , tetragonal crystal system , isothermal process , phase transition , trigonal crystal system , condensed matter physics , phase (matter) , crystallography , thermodynamics , dielectric , crystal structure , optoelectronics , chemistry , physics , organic chemistry

Electrocaloric effects of (001), (011) and (111) oriented single crystals have been thoroughly investigated to study the ferroelectric-ferroelectric (FE-FE) phase transition induced isothermal entropy changes in 0.94Pb(Zn1/3Nb2/3)O3–0.06PbTiO3 (PZN-PT) material. The results showed that the PZN-PT crystals oriented in (111) direction exhibit ∼ 38% higher electrocaloric cooling values near lower critical phase transitions from rhombohedral (R) to tetragonal (T) phases in PZN-PT crystals, compared to those oriented in (011) direction. Though (111) samples display higher cooling values, (011) samples showed broader cooling curves due to their easily switchable characteristics between R and T phases

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