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A dipole glass is an analog of a glass where the dipoles are frozen below a given freezing temperature Tf introducing randomness thus resulting in a lack of long-range ferroelectric order. A dipole glass is very similar to the concept of a spin glass where the atomic spins don't all align in the same direction (like in a ferromagnetic material) and thus result in a net-zero magnetization. The randomness of dipoles in a dipole glass creates local fields resulting in short-range order but no long-range order.

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  • Dipole glass (en)
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  • A dipole glass is an analog of a glass where the dipoles are frozen below a given freezing temperature Tf introducing randomness thus resulting in a lack of long-range ferroelectric order. A dipole glass is very similar to the concept of a spin glass where the atomic spins don't all align in the same direction (like in a ferromagnetic material) and thus result in a net-zero magnetization. The randomness of dipoles in a dipole glass creates local fields resulting in short-range order but no long-range order. (en)
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  • A dipole glass is an analog of a glass where the dipoles are frozen below a given freezing temperature Tf introducing randomness thus resulting in a lack of long-range ferroelectric order. A dipole glass is very similar to the concept of a spin glass where the atomic spins don't all align in the same direction (like in a ferromagnetic material) and thus result in a net-zero magnetization. The randomness of dipoles in a dipole glass creates local fields resulting in short-range order but no long-range order. The dipole glass like state was first observed in Alkali halide crystal-type dielectrics containing dipole impurities. The dipole impurities in these materials result in off-center ions which results in anomalies in certain properties like specific heat, thermal conductivity as well as some spectroscopic properties. Other materials which show a dipolar glass phase include Rb(1-x)(NH4)xH2PO4 (RADP) and Rb(1-x)(ND4)xD2PO4 (DRADP). In materials like DRADP the dipole moment is introduced due to the deuteron O-D--O bond. Dipole glass like behavior is also observed in materials like ceramics, 3D water framework and perovskites. (en)
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