quadrupole magnet
... A quadrupole magnet imparts a force proportional to distance from the center. This magnet has 4 poles: Consider a positive particle traveling into the page (into the magnet field). According to the right hand rule, the force on a particle on the right side of the magnet is to the right, and the forc ...
... A quadrupole magnet imparts a force proportional to distance from the center. This magnet has 4 poles: Consider a positive particle traveling into the page (into the magnet field). According to the right hand rule, the force on a particle on the right side of the magnet is to the right, and the forc ...
Fundamental Properties of Superconductors - Wiley-VCH
... energy can only take place by a transition of the system from one state to another. This restriction to discrete states becomes particularly clear for atomic objects. In 1913, Niels Bohr proposed the first stable model of an atom, which could explain a large number of facts hitherto not understood. ...
... energy can only take place by a transition of the system from one state to another. This restriction to discrete states becomes particularly clear for atomic objects. In 1913, Niels Bohr proposed the first stable model of an atom, which could explain a large number of facts hitherto not understood. ...
Chapter 1 Magnetic properties of heavy lanthanide metals
... ferromagnetism (TC = 293 K) due to a missing nesting feature. The 4f shell is spherical symmetric so that the crystal-field interaction is small. The residual magnetic anisotropy causes the moments to point along the c axis below TC . At lower temperatures, the easy axis begins to deviate towards th ...
... ferromagnetism (TC = 293 K) due to a missing nesting feature. The 4f shell is spherical symmetric so that the crystal-field interaction is small. The residual magnetic anisotropy causes the moments to point along the c axis below TC . At lower temperatures, the easy axis begins to deviate towards th ...
Serguei Brazovski. Ferroelectricity in Organic and Polymeric
... Effect is registered and interpreted in two families of organic crystalline conductors (quasi 1D and quasi 2D). ...
... Effect is registered and interpreted in two families of organic crystalline conductors (quasi 1D and quasi 2D). ...
Four Different Kinds of Magnetism
... A phenomenon in some materials in which the susceptibility is negative, i.e. the magnetization opposed the magnetizing force. It arises from the precession of spinning charges in a magnetic field. The magnetization is in the opposite direction to that of the applied field, i.e. the magnetic suscepti ...
... A phenomenon in some materials in which the susceptibility is negative, i.e. the magnetization opposed the magnetizing force. It arises from the precession of spinning charges in a magnetic field. The magnetization is in the opposite direction to that of the applied field, i.e. the magnetic suscepti ...
Neutrons and new materials - Institut Laue
... radioactive strontium-90 ions, which are then trapped because they are larger. This material was designed to have channels large enough to release sodium, but small enough to trap strontium-90. Alumino-silicate minerals, or zeolites, are also used extensively as ion exchangers (see ...
... radioactive strontium-90 ions, which are then trapped because they are larger. This material was designed to have channels large enough to release sodium, but small enough to trap strontium-90. Alumino-silicate minerals, or zeolites, are also used extensively as ion exchangers (see ...
Metallic Crystal Structure
... electrons no longer 'belong' to any particular atom but are the common property of all atoms present. Since valence electrons in the common 'cloud' are able to travel freely among the positive ions this gives an explanation of the high electrical conductivity of metals, Some general behaviors of the ...
... electrons no longer 'belong' to any particular atom but are the common property of all atoms present. Since valence electrons in the common 'cloud' are able to travel freely among the positive ions this gives an explanation of the high electrical conductivity of metals, Some general behaviors of the ...
and B site
... magnetization disappears above a certain critical temperature, Tc also called Curie temperature and they become paramagnetic ...
... magnetization disappears above a certain critical temperature, Tc also called Curie temperature and they become paramagnetic ...
Formation of intermetallic compounds upon cooling of Sn1
... Upon cooling and holding at 1373 K the diffraction pattern transforms, in particular maxima arise. Peaks corresponding to the liquid phase disappear, whereas a few other peaks, corresponding to the ZrSn2 compound, appear. These facts indicate the occurrence of a peritectic reaction under these condi ...
... Upon cooling and holding at 1373 K the diffraction pattern transforms, in particular maxima arise. Peaks corresponding to the liquid phase disappear, whereas a few other peaks, corresponding to the ZrSn2 compound, appear. These facts indicate the occurrence of a peritectic reaction under these condi ...
Magnetic and orbital ordering of RuO2 planes in RuSr2„Eu,Gd
... coexists with magnetic order, which was first believed to be FM,9–12 since the magnetization shows a rapid increase with magnetic field for fields below 5 T, and the inverse magnetic susceptibility at high temperatures yields a positive Curie constant ⌰ = 100± 3 K.12 However, neutron diffraction exp ...
... coexists with magnetic order, which was first believed to be FM,9–12 since the magnetization shows a rapid increase with magnetic field for fields below 5 T, and the inverse magnetic susceptibility at high temperatures yields a positive Curie constant ⌰ = 100± 3 K.12 However, neutron diffraction exp ...
Composition and Structure of Earth`s Interior
... – Mass: chemical diffusivity – Energy: thermal diffusivity – Momentum: viscosity – Electrons: electrical conductivity ...
... – Mass: chemical diffusivity – Energy: thermal diffusivity – Momentum: viscosity – Electrons: electrical conductivity ...
Exploration of new superconductors and
... this superconductor family was called “Pnictide Superconductors”. However, researchers now call them “Iron-based Superconductors” because several measurements and evaluations have clarified that they all have similar electronic structure where the 3d electrons derived from Fe ion dominate the Fermi ...
... this superconductor family was called “Pnictide Superconductors”. However, researchers now call them “Iron-based Superconductors” because several measurements and evaluations have clarified that they all have similar electronic structure where the 3d electrons derived from Fe ion dominate the Fermi ...
Solid State Physics and Semiconductors
... those ranges of energy that an electron within the solid may have (called energy bands, allowed bands, or simply bands) and ranges of energy that it may not have (called band gaps or forbidden bands). Band theory derives these bands and band gaps by examining the allowed quantum mechanical wave func ...
... those ranges of energy that an electron within the solid may have (called energy bands, allowed bands, or simply bands) and ranges of energy that it may not have (called band gaps or forbidden bands). Band theory derives these bands and band gaps by examining the allowed quantum mechanical wave func ...
78, 174508 (2008)
... Near optimum doping, the PKE appears at a temperature below Tc, which is consistent with the existence of a zerotemperature quantum phase transition under the superconducting dome. This observation suggests that the TR symmetry breaking and the pseudogap in the cuprates may have the same physical or ...
... Near optimum doping, the PKE appears at a temperature below Tc, which is consistent with the existence of a zerotemperature quantum phase transition under the superconducting dome. This observation suggests that the TR symmetry breaking and the pseudogap in the cuprates may have the same physical or ...
Structural, electric, and magnetic properties of Mn perovskites
... anisotropy. The term H Hund parameterizes the Hund’s coupling between e g and t 2 g spins, H onsite also parameterizes the on-site Coulomb interactions between e g electrons, and H S denotes the magnitude of the AF coupling between nearest neighboring t 2 g spins; for the reasonable value of this c ...
... anisotropy. The term H Hund parameterizes the Hund’s coupling between e g and t 2 g spins, H onsite also parameterizes the on-site Coulomb interactions between e g electrons, and H S denotes the magnitude of the AF coupling between nearest neighboring t 2 g spins; for the reasonable value of this c ...
High-temperature superconductivity
High-temperature superconductors (abbreviated high-Tc or HTS) are materials that behave as superconductors at unusually high temperatures. The first high-Tc superconductor was discovered in 1986 by IBM researchers Georg Bednorz and K. Alex Müller, who were awarded the 1987 Nobel Prize in Physics ""for their important break-through in the discovery of superconductivity in ceramic materials"".Whereas ""ordinary"" or metallic superconductors usually have transition temperatures (temperatures below which they superconduct) below 30 K (−243.2 °C), and must be cooled using liquid helium in order to achieve superconductivity, HTS have been observed with transition temperatures as high as 138 K (−135 °C), and can be cooled to superconductivity using liquid nitrogen. Until 2008, only certain compounds of copper and oxygen (so-called ""cuprates"") were believed to have HTS properties, and the term high-temperature superconductor was used interchangeably with cuprate superconductor for compounds such as bismuth strontium calcium copper oxide (BSCCO) and yttrium barium copper oxide (YBCO). However, several iron-based compounds (the iron pnictides) are now known to be superconducting at high temperatures.For an explanation about Tc (the critical temperature for superconductivity), see Superconductivity § Superconducting phase transition and the second bullet item of BCS theory § Successes of the BCS theory.