Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 511-516 |
| Number of pages | 6 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 473 |
| Early online date | 6 Oct 2018 |
| DOIs | |
| Publication status | Published - 1 Mar 2019 |
Cite this
Magnetocaloric effect and piezoresponse of engineered ferroelectric-ferromagnetic heterostructures. / Vats, Gaurav; Ravikant; Kumari, Shalini; Pradhan, Dhiren; Katiyar, Ram; Ojha, V. N.; Bowen, Christopher; Kumar, Ashok.
In: Journal of Magnetism and Magnetic Materials, Vol. 473, 01.03.2019, p. 511-516.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Magnetocaloric effect and piezoresponse of engineered ferroelectric-ferromagnetic heterostructures
AU - Vats, Gaurav
AU - Ravikant, null
AU - Kumari, Shalini
AU - Pradhan, Dhiren
AU - Katiyar, Ram
AU - Ojha, V. N.
AU - Bowen, Christopher
AU - Kumar, Ashok
PY - 2019/3/1
Y1 - 2019/3/1
N2 - Present study reports the magnetocaloric effect (MCE) and piezoresponse of integrated ferroelectric-ferromagnetic heterostructures of PbZr0.52Ti0.48O3 (PZT) (5 nm)/ Bi-Sr-Ca-Cu2-OX (BSCCO) (5 nm)/ La0.67Sr0.33MnO3 (LSMO) (40 nm)/ MgO. Magnetic and pizoresponse behavior of the heterostructures are found to be governed by magneto-electric coupling and induced lattice strains. In addition, the MCE is studied using Maxwell equations from both Field Cooled (FC) and Zero Field Cooled (ZFC) magnetization data. Maximum MCE entropy change (|ΔS|) of 42.6 mJkg-1K-1 (at 258 K) and 41.7 mJkg-1K-1 (at 269 K) are found corresponding to FC and ZFC data, respectively. The variation in maximum entropy change and corresponding temperatures for FC and ZFC data revealed that the application of a magnetic field can significantly contribute towards tuning of the MCE. Interestingly, these multilayered structures are found to sustain MCE over a broad temperature range, which makes them attractive for improved solid-state energy conversion devices.
AB - Present study reports the magnetocaloric effect (MCE) and piezoresponse of integrated ferroelectric-ferromagnetic heterostructures of PbZr0.52Ti0.48O3 (PZT) (5 nm)/ Bi-Sr-Ca-Cu2-OX (BSCCO) (5 nm)/ La0.67Sr0.33MnO3 (LSMO) (40 nm)/ MgO. Magnetic and pizoresponse behavior of the heterostructures are found to be governed by magneto-electric coupling and induced lattice strains. In addition, the MCE is studied using Maxwell equations from both Field Cooled (FC) and Zero Field Cooled (ZFC) magnetization data. Maximum MCE entropy change (|ΔS|) of 42.6 mJkg-1K-1 (at 258 K) and 41.7 mJkg-1K-1 (at 269 K) are found corresponding to FC and ZFC data, respectively. The variation in maximum entropy change and corresponding temperatures for FC and ZFC data revealed that the application of a magnetic field can significantly contribute towards tuning of the MCE. Interestingly, these multilayered structures are found to sustain MCE over a broad temperature range, which makes them attractive for improved solid-state energy conversion devices.
U2 - 10.1016/j.jmmm.2018.10.024
DO - 10.1016/j.jmmm.2018.10.024
M3 - Article
VL - 473
SP - 511
EP - 516
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
ER -