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Statements

Subject Item
dbr:Dipole_glass
rdfs:label
Dipole glass
rdfs:comment
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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dbc:Wikipedia_Student_Program dbc:Types_of_magnets dbc:Electromagnetism dbc:Electromagnetic_compatibility
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69404632
dbo:wikiPageRevisionID
1086190905
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dbr:Replica_trick dbr:Glass dbr:Dipole dbr:Spin_glass dbr:Gaussian_measure dbr:Alkali_halide dbc:Electromagnetic_compatibility dbc:Types_of_magnets dbr:Electric_field dbr:Ferroelectricity dbr:Edwards–Anderson_model dbr:Gaussian dbc:Wikipedia_Student_Program dbr:Probability_distribution dbr:Perovskite_(structure) dbr:Dielectric dbr:Hamiltonian_mechanics dbc:Electromagnetism dbr:Deuteron dbr:Ceramic
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dbo:abstract
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.
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wikipedia-en:Dipole_glass?oldid=1086190905&ns=0
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wikipedia-en:Dipole_glass