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

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 $γ$ 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 $d c$ electric fields. The presence of two groups of orbital magnetic moments appears to be responsible for the asymmetric lattice distortions. Our findings provide an alternative pathway for hydrogen-based materials to potentially add a ferroelectric functionality.

Inducing ferroelectricity in NH $_{4}$ I and NH $_{4}$ Br via partial replacement of protons by deuterons

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Inducing ferroelectricity in NH $_{4}$ I and NH $_{4}$ Br via partial replacement of protons by deuterons

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Inducing ferroelectricity in NH44​I and NH44​Br via partial replacement of protons by deuterons

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Inducing ferroelectricity in NH44​I and NH44​Br via partial replacement of protons by deuterons

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Inducing ferroelectricity in NH $_{4}$ I and NH $_{4}$ Br via partial replacement of protons by deuterons

讲解博客

AI智能校验

Inducing ferroelectricity in NH $_{4}$ I and NH $_{4}$ Br via partial replacement of protons by deuterons

讲解博客

AI智能校验