Výsledky vyhledávání - "ZHAO Miao-miao"

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Inducing ferroelectricity in NH$_4$I and NH$_4$Br via partial replacement of protons by deuterons

Autor: Zhao, Miao Miao, Meng, Lei, Xu, Yi Yang, Du, Na, Yen, Fei

Publikováno v: J. Phys. Chem. C 127, 20951-20955 (2023)

While all of the polymorphs of NH$_4$I and NH$_4$Br are non-polar, a reversible electric polarization is established in the ordered $\gamma$ phases of (NH$_4$)$_{0.73}$(ND$_4$)$_{0.27}$I and (NH$_4$)$_{0.84}$(ND$_4$)$_{0.16}$Br (where D is $^2$H) via

Externí odkaz: http://arxiv.org/abs/2405.15277

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Electric Polarization and Magnetic Properties of (NH$_4$)$_{1-x}$K$_x$I (x = 0.05-0.17)

Autor: Xu, Yi Yang, Meng, Lei, Zhao, Miao Miao, Peng, Chu Xin, Yen, Fei

Publikováno v: Journal of Alloys and Compounds 960, 170685 (2023)

While all of the polymorphs of pure NH$_4$I and KI are non-polar, we identify that (NH$_4$)$_{0.95}$K$_{0.05}$I is ferroelectric and (NH$_4$)$_{0.87}$K$_{0.13}$I and (NH$_4$)$_{0.83}$K$_{0.17}$I are pyroelectric through measurements of their pyroelec

Externí odkaz: http://arxiv.org/abs/2405.15261

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Magnetic interactions based on proton orbital motion in CH$_3$NH$_3$PbI$_3$ and CH$_3$NH$_3$PbBr$_3$

Autor: Meng, Lei, Zhao, Miao Miao, Xu, Yi Yang, Peng, Chu Xin, Yang, Yang, Xing, Tian Tian, Ren, Peng, Yen, Fei

Publikováno v: Scripta Mater. 226, 115229 (2023)

The microscopic origin of the remarkable optoelectronic properties of one of the most studied contemporary materials remains unclear. Here, we identify the existence of magnetic interactions between intermolecular proton orbitals in CH$_3$NH$_3$PbI$_

Externí odkaz: http://arxiv.org/abs/2405.09094

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Ferroelectricity Driven by Orbital Resonance of Protons in CH$_3$NH$_3$Cl and CH$_3$NH$_3$Br

Autor: Peng, Chu Xin, Meng, Lei, Xu, Yi Yang, Xing, Tian Tian, Zhao, Miao Miao, Ren, Peng, Yen, Fei

Publikováno v: J. Mater. Chem. C, 10, 1334-1338 (2022)

The $\beta$ and $\gamma$ phases of methylammonium chloride CH$_3$NH$_3$Cl and methylammonium bromide CH$_3$NH$_3$Br are identified to be ferroelectric $via$ pyroelectric current and dielectric constant measurements. The magnetic susceptibility also e

Externí odkaz: http://arxiv.org/abs/2405.09759

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Determining the chemical composition of diamagnetic mixed solids via measurements of the magnetic susceptibility

Autor: Zhao, Miao Miao, Yang, Yang, Du, Na, Zhu, Yu Ying, Ren, Peng, Yen, Fei

Mixed solid compounds are employed in a vast array of applications so an accurate determination of their chemical compositions is of crucial importance. All current characterization methods require specially-treated samples so the availability of a m

Externí odkaz: http://arxiv.org/abs/2404.02012

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