Abstract
This study reports the magnetocaloric effect (MCE) and piezoresponse of integrated ferroelectric-ferromagnetic heterostructures of PbZr 0.52Ti 0.48O 3 (PZT) (5 nm)/Bi-Sr-Ca-Cu 2-O X (BSCCO) (5 nm)/La 0.67Sr 0.33MnO 3 (LSMO) (40 nm)/MgO (0 0 1). Magnetic and pizoresponse behavior of the heterostructures are found to be governed by magneto-electric coupling and induced lattice strains. In addition, a maximum 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.
| 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 |
Keywords
- Lattice strains
- Magneto-electric coupling
- Magnetocaloric effect
- Multi-layered heterostructures
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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
}
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 - This study reports the magnetocaloric effect (MCE) and piezoresponse of integrated ferroelectric-ferromagnetic heterostructures of PbZr 0.52Ti 0.48O 3 (PZT) (5 nm)/Bi-Sr-Ca-Cu 2-O X (BSCCO) (5 nm)/La 0.67Sr 0.33MnO 3 (LSMO) (40 nm)/MgO (0 0 1). Magnetic and pizoresponse behavior of the heterostructures are found to be governed by magneto-electric coupling and induced lattice strains. In addition, a maximum 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 - This study reports the magnetocaloric effect (MCE) and piezoresponse of integrated ferroelectric-ferromagnetic heterostructures of PbZr 0.52Ti 0.48O 3 (PZT) (5 nm)/Bi-Sr-Ca-Cu 2-O X (BSCCO) (5 nm)/La 0.67Sr 0.33MnO 3 (LSMO) (40 nm)/MgO (0 0 1). Magnetic and pizoresponse behavior of the heterostructures are found to be governed by magneto-electric coupling and induced lattice strains. In addition, a maximum 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.
KW - Lattice strains
KW - Magneto-electric coupling
KW - Magnetocaloric effect
KW - Multi-layered heterostructures
UR - http://www.scopus.com/inward/record.url?scp=85056476775&partnerID=8YFLogxK
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 -