Results 61 to 70 of about 1,641 (185)

Aging Effects on PTCR Ceramics: SEM and C‐AFM Analysis of Electrical Conductivity and Domain Structures

International Journal of Applied Ceramic Technology, Volume 23, Issue 4, August 2026.
ABSTRACT This study examines the impact of aging on the electrical and structural properties of positive temperature coefficient of resistance (PTCR) ceramics. The presented study introduces a correlative scanning electron microscopy (SEM)/conductive atomic force microscopy (C‐AFM) approach enabling repeated, site‐specific characterization of ...
Kryštof Koller, Filip Ulč, Patrik Sokola, Veronika Hegrová, Petr Ptáček   +4 more
wiley   +1 more source

Structural and morphological characterization of rare earth modified lead titanate Caracterização estrutural e morfológica de titanatos de chumbo modificados por terras raras

Cerâmica, 2007
Rare earth modified lead titanate powders Pb1-xRExTiO3 (REPT), x = 0.01, 0.05, 0.07 and RE = Yb, Y, were prepared by the Pechini method. The materials were calcined under flowing oxygen at different temperatures from 300 to 700 ºC.
F. C. D. Lemos, D. M. A. Melo, P. S. de Lima, C. A. Paskocimas, E. Longo, J. E.C. da Silva   +5 more
doaj   +1 more source

Designing of an Ultrasensitive Surface Plasmon Resonance Sensor Based on Strontium Titanate and Transition Metal Dichalcogenide Material for the Detection of Uric Acid

Advanced Photonics Research, Volume 7, Issue 7, July 2026.
The proposed surface plasmon resonance biosensor with prism/Ag/WS2/SrTiO3/Ni layers enables highly sensitive and precise detection of uric acid through enhanced plasmonic response and sharp resonance characteristics. Elevated uric acid (UA) levels are associated with various disorders, making precise and quick detection important for early diagnosis ...
Hridi Saha, Md Abu Shahid Chowdhury, Md. Sherajul Islam, Md Maruf Hossain Shuvo, Jeongwon Park   +4 more
wiley   +1 more source

Atomic substitution effects on the structural and vibrational properties of NixPb1-xTiO3: X-ray diffraction and Raman scattering investigations

AIP Advances, 2015
The effects of the atomic substitution of Pb by Ni in the PbTiO3 ferroelectric perovskite on the vibrational and structural properties was studied using x-ray diffraction and Raman scattering.
R. C. da Costa, T. A. de Toledo, J. W. M. Espinosa, P. S. Pizani   +3 more
doaj   +1 more source

Propriedades eletrônicas e estruturais do PbTiO3: teoria do funcional de densidade aplicada a modelos periódicos Structural and electronic properties of PbTio3: density functional theory applied to periodic models

Química Nova, 2005
Calculations based on density functional theory at the B3LYP hybrid functional level applied to periodic models have been performed to characterize the structural and electronic properties of PbTiO3.
Sérgio Ricardo de Lázaro, Elson Longo, Armando Beltran, Júlio Ricardo Sambrano   +3 more
doaj   +1 more source

Zero Thermal Expansion and Local Structure in KxMnxFe2‐xMo3O12‐Based Materials

Advanced Science, Volume 13, Issue 38, 9 July 2026.
Local structure engineering via ion insertion drives local structural transformation from low‐symmetry P21/a to high‐symmetry R‐3c, enhancing structural flexibility and realizing a transition from positive thermal expansion to wide‐temperature‐range zero thermal expansion in KxMnxFe2‐xMo3O12‐based materials.
Gongsen He, Yongqiang Qiao, Shibo Zhao, Xin Chen, Xiangkai Hao, Kaiyue Zhao, Xinglai Yuan, Mengru Li, Wen Yin, Shintaro Kobayashi, Shogo Kawaguchi, Bingbing Fan, Rui Zhang, Qilong Gao   +13 more
wiley   +1 more source

Polarization rotation associated critical phenomena in epitaxial PbTiO3 thin films near room temperature

AIP Advances, 2016
Strain-driven and temperature-driven monoclinic-orthorhombic phase transition in epitaxial PbTiO3 exhibit similar behavior under electric field, i.e., polarization discontinuity is reduced at the first-order ferroelectric-ferroelectric transition whose ...
Wenhui Ma
doaj   +1 more source

Synergistically boosting charge separation and surface activity for efficient solar-powered cathodic metal protection

Carbon Neutrality
The escalating global energy demand has spurred the emergence of diverse solar-powered systems. As a typical example, photocathodic protection (PCP) is a promising technology to prevent metal corrosion via a “solar-electric-chemical” energy conversion ...
Hui Xie, Guangyao Nie, Yuchen Fang, Weihua Li, Shihe Yang, Fa-Qian Liu, Zheng Xing   +6 more
doaj   +1 more source

Manipulating topological transformations of polar structures through real-time observation of the dynamic polarization evolution

Nature Communications, 2019
Direct observation of the dynamic evolution of polar domain structures at atomic level remains challenging. Here, the authors report the observation of real-time topological transformations of polar structures in PbTiO3/SrTiO3 multilayers.
K. Du, M. Zhang, C. Dai, Z. N. Zhou, Y. W. Xie, Z. H. Ren, H. Tian, L. Q. Chen, Gustaaf Van Tendeloo, Z. Zhang   +9 more
doaj   +1 more source

Comportamento térmico do PbTiO3 modificado por terras raras Thermal behavior of rare earth modified PbTiO3

Cerâmica, 2005
Titanatos de chumbo dopados com itérbio e ítrio, PYbT e PYT foram preparados pelo método Pechini. Os materiais obtidos foram calcinados sobre fluxo de oxigênio em diferentes temperaturas e investigados utilizando-se as técnicas de difração de raios X ...
F. C. D. Lemos, E. Longo, D. M. A. Melo, A. O. Silva, F. J. S. Lima, J. E. C. Silva   +5 more
doaj   +1 more source