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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.[1] 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.[2][3][4] 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.[1] Other materials which show a dipolar glass phase include Rb(1-x)(NH4)xH2PO4 (RADP) and Rb(1-x)(ND4)xD2PO4 (DRADP).[5][6] 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,[7] 3D water framework[8] and perovskites.[9][10]
^ abVugmeister, B. E.; Glinchuk, M. D. (1990-10-01). "Dipole glass and ferroelectricity in random-site electric dipole systems". Reviews of Modern Physics. 62 (4): 993–1026. Bibcode:1990RvMP...62..993V. doi:10.1103/RevModPhys.62.993.
^Känzig, W.; Hart, H. R.; Roberts, S. (1964-11-02). "Paraelectricity and Ferroelectricity Due to Hydroxyl Ions in Alkali Halides; Paraelectric Cooling". Physical Review Letters. 13 (18): 543–545. Bibcode:1964PhRvL..13..543K. doi:10.1103/PhysRevLett.13.543.
^Peressini, P. P.; Harrison, J. P.; Pohl, R. O. (1969-04-15). "Thermal Conductivity of KCl: Li. Isotope and Electric Field Effects". Physical Review. 180 (3): 926–930. Bibcode:1969PhRv..180..926P. doi:10.1103/PhysRev.180.926.
^Fiory, A. T. (1971-07-15). "Electric Dipole Interactions Among Polar Defects in Alkali Halides". Physical Review B. 4 (2): 614–627. Bibcode:1971PhRvB...4..614F. doi:10.1103/PhysRevB.4.614.
^Kim, Bog-Gi; Kim, Jong-Jean; Jang, Hyun M. (1999-09-01). "Correlated domain model of deuterated dipole glass". Physical Review B. 60 (10): 7170–7177. Bibcode:1999PhRvB..60.7170K. doi:10.1103/PhysRevB.60.7170.
A dipoleglass is an analog of a glass where the dipoles are frozen below a given freezing temperature Tf introducing randomness thus resulting in a lack...
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(although the actual prize had expired uncollected in 1882). He used a dipole antenna consisting of two collinear one-meter wires with a spark gap between...
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field is given in teslas. A magnet's magnetic moment (also called magnetic dipole moment and usually denoted μ) is a vector that characterizes the magnet's...
linkages. Polyesters have dipole-dipole bonding between the oxygen atoms in C=O groups and the hydrogen atoms in H-C groups. Dipole bonding is not as strong...
here as part of the sound source description (monopole – symmetric and dipole – asymmetric). Whistles that generate sound through fluctuations of mass...
It is based on the interaction of an external field with the electric dipole moment of the sample, often expressed by permittivity. It is also an experimental...
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give the trimer [Se(O)O]3. Monomeric SeO2 is a polar molecule, with the dipole moment of 2.62 D pointed from the midpoint of the two oxygen atoms to the...
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the glass does, that is, if it repels the glass and attracts the resin, the body is said to be vitreously electrified, and if it attracts the glass and...
matter? Anomalous magnetic dipole moment: Why is the experimentally measured value of the muon's anomalous magnetic dipole moment ("muon g − 2") significantly...
electric dipole approximation for the interaction with light), the process cannot happen, but at a higher level of approximation (e.g. magnetic dipole, or...
surfaces come in contact and deform slightly under imposed loads Hertzian dipole, defined as a finite oscillating current over an infinitesimal length at...
general, different intensities, with some being entirely forbidden (in the dipole approximation), as governed by the selection rules. Since the distance between...
induce a net dipole moment) thin films as large as 6–7 pC/N: 10 times larger than that observed in any other polymer. PVDF has a glass transition temperature...
electric dipole moment of the neutron. Currently, there are at least four experiments trying to measure for the first time a finite neutron electric dipole moment...
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