Evolution of local heterogeneity towards flat free energy landscape: Optimization of piezoelectric response in PNN-PZ-PT at morphotropic phase boundary
A precisely specified compositional landscape of two distinct ferroelectric systems – morphotropic phase boundary (MPB) – possesses ultrahigh piezoelectricity, where generically a flat energy profile is favoured under thermodynamic consideration. A more exotic and technologically appealing phase is...
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Elsevier
2025-06-01
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| Series: | Chemical Physics Impact |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667022425000283 |
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| author | Shubham Modgil Varun Kamboj Mukul Kumar Arun Kumar Singh Shobhna Dhiman Gyaneshwar Sharma OP Thakur Sanjeev Kumar |
| author_facet | Shubham Modgil Varun Kamboj Mukul Kumar Arun Kumar Singh Shobhna Dhiman Gyaneshwar Sharma OP Thakur Sanjeev Kumar |
| author_sort | Shubham Modgil |
| collection | DOAJ |
| description | A precisely specified compositional landscape of two distinct ferroelectric systems – morphotropic phase boundary (MPB) – possesses ultrahigh piezoelectricity, where generically a flat energy profile is favoured under thermodynamic consideration. A more exotic and technologically appealing phase is unlocked when ternary-based morphotropic phase boundary compositions are formulated via revisiting the thermal and compositional stability. Local structure heterogeneity is another generic route towards optimization of the piezoelectric performance via rare earth doping, as rare-earth doping introduces the local structural distortions. To enhance piezoelectric response, we adopt rare earth Sm3+ doping into ternary based morphotropic phase boundary 0.55Pb(Ni1/3Nb2/3)O3–0.135PbZrO3–0.315PbTiO3 samples. The effect of Sm3+doping on the structure, microstructure, dielectric, ferroelectric and piezoelectric properties of 0.55Pb(Ni1/3Nb2/3)O3–0.135PbZrO3–0.315PbTiO3 were investigated. Dielectric spectroscopy and order parameter analysis collectively reveal that the free energy landscape of morphotropic phase boundary is further softened via local structural heterogeneity, enabled via rare earth doping. As a result of free energy flattening, dielectric and piezoelectric responses of Sm3+ doped system are significantly enhanced. Piezoelectric coefficient increases from 545pC/N (x = 0%) to 810pC/N (x = 1%) with Sm3+ doping. Observed results suggest that the piezoelectric and ferroic performances of morphotropic phase boundary based 0.55Pb(Ni1/3Nb2/3)O3–0.135PbZrO3–0.315PbTiO3 can further be improved by hetero-structural tuning via optimized rare earth doping. |
| format | Article |
| id | doaj-art-510b5d55626e45e297fe4f4745ce8bb7 |
| institution | Kabale University |
| issn | 2667-0224 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Physics Impact |
| spelling | doaj-art-510b5d55626e45e297fe4f4745ce8bb72025-01-28T04:14:58ZengElsevierChemical Physics Impact2667-02242025-06-0110100840Evolution of local heterogeneity towards flat free energy landscape: Optimization of piezoelectric response in PNN-PZ-PT at morphotropic phase boundaryShubham Modgil0Varun Kamboj1Mukul Kumar2Arun Kumar Singh3Shobhna Dhiman4Gyaneshwar Sharma5OP Thakur6Sanjeev Kumar7Physics Department, Punjab Engineering College (Deemed to be University), Chandigarh 160012, IndiaPhysics Department, Punjab Engineering College (Deemed to be University), Chandigarh 160012, IndiaPhysics Department, Punjab Engineering College (Deemed to be University), Chandigarh 160012, IndiaElectronics and Communications Engineering Department, Punjab Engineering College, (Deemed to be University), IndiaPhysics Department, Punjab Engineering College (Deemed to be University), Chandigarh 160012, IndiaDepartment of Physics, TilakDhari PG College, Jaunpur 222002, India; Co-corresponding author.Solid State Physics Laboratory, Timarpur Road, New Delhi 110054, IndiaPhysics Department, Punjab Engineering College (Deemed to be University), Chandigarh 160012, India; Corresponding author.A precisely specified compositional landscape of two distinct ferroelectric systems – morphotropic phase boundary (MPB) – possesses ultrahigh piezoelectricity, where generically a flat energy profile is favoured under thermodynamic consideration. A more exotic and technologically appealing phase is unlocked when ternary-based morphotropic phase boundary compositions are formulated via revisiting the thermal and compositional stability. Local structure heterogeneity is another generic route towards optimization of the piezoelectric performance via rare earth doping, as rare-earth doping introduces the local structural distortions. To enhance piezoelectric response, we adopt rare earth Sm3+ doping into ternary based morphotropic phase boundary 0.55Pb(Ni1/3Nb2/3)O3–0.135PbZrO3–0.315PbTiO3 samples. The effect of Sm3+doping on the structure, microstructure, dielectric, ferroelectric and piezoelectric properties of 0.55Pb(Ni1/3Nb2/3)O3–0.135PbZrO3–0.315PbTiO3 were investigated. Dielectric spectroscopy and order parameter analysis collectively reveal that the free energy landscape of morphotropic phase boundary is further softened via local structural heterogeneity, enabled via rare earth doping. As a result of free energy flattening, dielectric and piezoelectric responses of Sm3+ doped system are significantly enhanced. Piezoelectric coefficient increases from 545pC/N (x = 0%) to 810pC/N (x = 1%) with Sm3+ doping. Observed results suggest that the piezoelectric and ferroic performances of morphotropic phase boundary based 0.55Pb(Ni1/3Nb2/3)O3–0.135PbZrO3–0.315PbTiO3 can further be improved by hetero-structural tuning via optimized rare earth doping.http://www.sciencedirect.com/science/article/pii/S2667022425000283PNN-PZ-PTmorphotropic phase boundaryferroelectricspiezoelectric |
| spellingShingle | Shubham Modgil Varun Kamboj Mukul Kumar Arun Kumar Singh Shobhna Dhiman Gyaneshwar Sharma OP Thakur Sanjeev Kumar Evolution of local heterogeneity towards flat free energy landscape: Optimization of piezoelectric response in PNN-PZ-PT at morphotropic phase boundary Chemical Physics Impact PNN-PZ-PT morphotropic phase boundary ferroelectrics piezoelectric |
| title | Evolution of local heterogeneity towards flat free energy landscape: Optimization of piezoelectric response in PNN-PZ-PT at morphotropic phase boundary |
| title_full | Evolution of local heterogeneity towards flat free energy landscape: Optimization of piezoelectric response in PNN-PZ-PT at morphotropic phase boundary |
| title_fullStr | Evolution of local heterogeneity towards flat free energy landscape: Optimization of piezoelectric response in PNN-PZ-PT at morphotropic phase boundary |
| title_full_unstemmed | Evolution of local heterogeneity towards flat free energy landscape: Optimization of piezoelectric response in PNN-PZ-PT at morphotropic phase boundary |
| title_short | Evolution of local heterogeneity towards flat free energy landscape: Optimization of piezoelectric response in PNN-PZ-PT at morphotropic phase boundary |
| title_sort | evolution of local heterogeneity towards flat free energy landscape optimization of piezoelectric response in pnn pz pt at morphotropic phase boundary |
| topic | PNN-PZ-PT morphotropic phase boundary ferroelectrics piezoelectric |
| url | http://www.sciencedirect.com/science/article/pii/S2667022425000283 |
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