Jonathan Gardner
University of St Andrews
18 Papers
105 Citations
Jonathan Gardner is an academic researcher from University of St Andrews. The author has contributed to research in topics: Dielectric & Ferroelectricity. The author has an hindex of 11, co-authored 18 publications. Previous affiliations of Jonathan Gardner include Andrews University.
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Papers
Room-temperature relaxor ferroelectricity and photovoltaic effects in tin titanate directly deposited on a silicon substrate
Radhe Agarwal,Yogesh Sharma,Yogesh Sharma,Siliang Chang,Krishna Chaitanya Pitike,Changhee Sohn,Serge Nakhmanson,Christos G. Takoudis,Ho Nyung Lee,Rachel Tonelli,Jonathan Gardner,James F. Scott,Ram S. Katiyar,Seungbum Hong,Seungbum Hong +14 more
TL;DR: In this article, perovskite phase of tin titanate can be prepared by atomic-layer deposition directly onto Si substrates, and these films exhibit ferroelectric switching at room temperature, with $p$-type Si acting as electrodes.
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Structural and dielectric studies of the phase behaviour of the topological ferroelectric La1−xNdxTaO4
Keith J. Cordrey,Magda Stanczyk,Charlotte A. L. Dixon,Kevin S. Knight,Jonathan Gardner,Finlay D. Morrison,Philip Lightfoot +6 more
TL;DR: Dielectric responses are observed at both the above structural events but, despite the 'topological ferroelectric' nature of orthorhombic LaTaO(4), the team has not succeeded in obtaining ferro electric P-E hysteresis behaviour.
Electrical studies of Barkhausen switching noise in ferroelectric PZT: Critical exponents and temperature dependence
C. D. Tan,C. Flannigan,Jonathan Gardner,Finlay D. Morrison,Ekhard K. H. Salje,Ekhard K. H. Salje,James F. Scott +6 more
TL;DR: In this article, the crackling noise of ferroelectric lead zirconate titanate samples during switching was demonstrated to be compatible with avalanche statistics, and the peaks of the slew rate (time derivative of current $dI/dt$ squared), defined as ''jerks'' were statistically analyzed and shown to obey power laws.
Manipulation of polar order in the “empty” tetragonal tungsten bronzes: Ba4-xSrxDy0.67□1.33Nb10O30, x = 0, 0.25, 0.5, 1, 2, 3
TL;DR: A series of empty tetragonal tungsten bronze (TTB) ferroelectrics, Ba4-xSrxDy0.67□1.33Nb10O30, is reported in this article.
Room temperature, continuous-wave coupled-cavity InAsP/InP photonic crystal laser with enhanced far-field emission directionality
Jingqing Huang,Se-Heon Kim,Jonathan Gardner,Philippe Regreny,Christian Seassal,Pablo Aitor Postigo,Axel Scherer +6 more
TL;DR: In this article, the authors demonstrate room temperature, continuous-wave lasing with enhanced far field emission directionality in coupled-cavity photonic crystal lasers, made with InAsP/InP quantum well material.