Results 61 to 70 of about 2,694,809 (245)

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

Microscopia de força piezoeléctrica de relaxors ferroeléctricos [PDF]

, 2010
Doutoramento em Ciência e Engenharia de MateriaisNesta tese, ferroeléctricos relaxor (I dont know uf the order is correct) de base Pb das familias (Pb,La)(Zr,Ti)O3 (PLZT), Pb(Mg1/3,Nb2/3)O3-PbTiO3 (PMN-PT), Pb(Zn1/3,Nb2/3)O3-PbTiO3 (PZN-PT) foram ...
Kiselev, Dmitry
core  

Piezoelectric properties of PbTiO3 thin films characterized with piezoresponse force and high resolution transmission electron microscopy [PDF]

, 2009
In this paper we investigate the piezoelectric properties of PbTiO3 thin films grown by pulsed laser deposition with piezoresponse force microscopy and transmission electron microscopy.
Venkatesan, Sriram,, Kooi, B. J., Morelli, A.,, Palasantzas, G.,, Hosson, J.Th.M. De,, Kooi, B.J.,, Morelli, A., Sriram Venkatesan, G. Palasantzas, Kooi, B. J.; id_orcid, Palasantzas, G., B. J. Kooi, J. Th. M. De Hosson, A. Morelli, Venkatesan, Sriram, De Hosson, J. Th. M.   +15 more
core   +2 more sources

Robust domain variants and ferroelectric property in epitaxial BiFeO3 films

Materials Research Express, 2020
Lead-free ferroelectric thin films have great potential for electric devices owing to the dramatically expanding information epoch. Exploring the domain engineering and temperature stability of ferroelectric films are still urgent since these ...
Xiaojun Qiao, Wenping Geng, Jianwei Meng, Yao Sun, Kaixi Bi, Yun Yang, Junbin Yu, Jian He, Xiujian Chou   +8 more
doaj   +1 more source

Oxygen‐Vacancy‐Regulated Crystallization and Ferroelectric Phase Stabilization in Hf0.5Zr0.5O2 Thin Films

Advanced Functional Materials, EarlyView.
Temperature‐resolved in situ grazing‐incidence wide‐angle X‐ray scattering reveals that oxygen vacancies actively regulate crystallization in Hf0.5Zr0.5O2 thin films. By decoupling macroscopic strain from intrinsic phase evolution, a vacancy‐lean environment significantly lowers the activation energy barrier for crystallization.
Hyun Woo Jeong, Jaewook Lee, Junseong Seo, Hyojun Choi, Dong Hee Han, Seungjae Heo, Tae‐Yeol Jeon, Yunseok Kim, Younghwan Lee, Min Hyuk Park   +9 more
wiley   +1 more source

Micro-Raman Imaging of Ferroelectric Domain Structures in the Bulk of PMN-PT Single Crystals

Crystals, 2019
We demonstrate the application of confocal Raman microscopy (CRM) for nondestructive imaging of ferroelectric domains both at the surface and in the bulk of lead magnesium niobate-lead titanate (PMN-PT) ferroelectric single crystals.
Pavel Zelenovskiy, Evgeny Greshnyakov, Dmitry Chezganov, Lyubov Gimadeeva, Evgeny Vlasov, Qingyuan Hu, Xiaoyong Wei, Vladimir Shur   +7 more
doaj   +1 more source

Bulk‐Like Spin Cycloid and Fast Switching in Freestanding BiFeO3

Advanced Functional Materials, EarlyView.
Freestanding BiFeO3 membranes overcome substrate‐induced constraints by simultaneously restoring the intrinsic bulk‐like spin cycloid and enabling ≈50% faster ferroelectric switching than substrate‐clamped epitaxial thin films. This combination of robust noncollinear antiferromagnetic order and efficient electric‐field switching establishes ...
Pratap Pal, Xiaoxi Deng, Gi‐Yeop Kim, Kyoungjun Lee, Jheng‐Cyuan Lin, Prithwijit Mandal, Jiangfeng Yang, Paul Steadman, Pascal Manuel, Roger D. Johnson, Si‐Young Choi, Paolo G. Radaelli, Chang‐Beom Eom   +12 more
wiley   +1 more source

Piezoresponse force microscopy behaviour of Bi4Ti3O12 ceramics with various excess bismuth [PDF]

Processing and Application of Ceramics, 2011
Bismuth titanate (Bi4Ti3O12 - BIT) ceramics derived from different amounts of excess Bi2O3 were prepared using the polymeric precursor method. In spite of excess bismuth, single phase ceramics were obtained with a controlled microstructure.
Ederson C. Aguiar, Alexandre Z. Simões, Francisco Moura, Mario Cilense, Elson Longo, Jose A. Varela   +5 more
doaj  

Rapid mapping of polarization switching through complete information acquisition

Nature Communications, 2016
Resolution of classical piezoresponse force microscopy is limited in data acquisition rates and energy scales. Here, Somnath et al. report an approach for rapid probing of ferroelectric switching using direct strain detection of material response to ...
Suhas Somnath, Alex Belianinov, Sergei V. Kalinin, Stephen Jesse   +3 more
doaj   +1 more source