Exchange Interactions in a Dinuclear Manganese (II) Complex with
... . When the radical molecules have a non-zero spin, they can form various ferrimagnetic spin structures with relatively high Curie point. The indirect exchange in most of these complexes is, however, negative. Ferromagnetic interactions between MnII ions were observed for several compounds only: with ...
... . When the radical molecules have a non-zero spin, they can form various ferrimagnetic spin structures with relatively high Curie point. The indirect exchange in most of these complexes is, however, negative. Ferromagnetic interactions between MnII ions were observed for several compounds only: with ...
Double Charge Ordering States and Spin Ordering State Observed
... ordering1,5, giant magnetocapacitance9, giant room-temperature magnetodielectric response10, giant magnetic anisotropy20, etc in the system. However, there are very few reports on the detailed energy structure of the 2D CO states and optical methods have been less reported in identification of the s ...
... ordering1,5, giant magnetocapacitance9, giant room-temperature magnetodielectric response10, giant magnetic anisotropy20, etc in the system. However, there are very few reports on the detailed energy structure of the 2D CO states and optical methods have been less reported in identification of the s ...
KJM-MENA 3120 Structure and properties of functional materials
... Relevant tetrahedral oxyanions are for instance; SiO44−, PO43−, SO42−, ClO4− from the p-group elements (note that similar oxoanions frequently exist for period 4 elements like Ge, As, Se, Br and some period 5 elements). Examples from the 3d-transition metals include VO43−, CrO42−, MnO4−. There exist ...
... Relevant tetrahedral oxyanions are for instance; SiO44−, PO43−, SO42−, ClO4− from the p-group elements (note that similar oxoanions frequently exist for period 4 elements like Ge, As, Se, Br and some period 5 elements). Examples from the 3d-transition metals include VO43−, CrO42−, MnO4−. There exist ...
TYPES OF IMPERFECTIONS
... 1. Atomic size factor. Appreciable quantities of a solute may be accommodated in this type of solid solution (substitutional ) only when the difference in atomic radii between the two atom types is less than about : 15% .Otherwise the solute atoms will create substantial lattice distortions and a ne ...
... 1. Atomic size factor. Appreciable quantities of a solute may be accommodated in this type of solid solution (substitutional ) only when the difference in atomic radii between the two atom types is less than about : 15% .Otherwise the solute atoms will create substantial lattice distortions and a ne ...
Document
... within a layer is greater by several orders of magnitude than the interaction between ions from neighboring layers, in a number of cases it is precisely this weak interaction that is responsible for the establishment of long-range magnetic order. Second, real magnets always possess a definite anisot ...
... within a layer is greater by several orders of magnitude than the interaction between ions from neighboring layers, in a number of cases it is precisely this weak interaction that is responsible for the establishment of long-range magnetic order. Second, real magnets always possess a definite anisot ...
Quasi-one-dimensional spin nematic states and their excitations Oleg Starykh, University of Utah
... seen at 9 K is an experimental artifact. It was notmagnetic susceptibility χ shown in Fig. 1(a) in a wide The easy to extract a magnetic contribution Cm from the ...
... seen at 9 K is an experimental artifact. It was notmagnetic susceptibility χ shown in Fig. 1(a) in a wide The easy to extract a magnetic contribution Cm from the ...
Chapter 5:
... Fast-ion conductors: NASICON NaZr2(PO4)3 (NZP) consists of corner-linked ZrO6 octahedra joined by PO4 tetrahedra, each of which corner-shares to four octahedra. •This arrangement creates a 3D system of channels with two types of vacant sites: •Type I – a single distorted octahedral site occupied by ...
... Fast-ion conductors: NASICON NaZr2(PO4)3 (NZP) consists of corner-linked ZrO6 octahedra joined by PO4 tetrahedra, each of which corner-shares to four octahedra. •This arrangement creates a 3D system of channels with two types of vacant sites: •Type I – a single distorted octahedral site occupied by ...
Full Text PDF
... bands appear at 3.098 eV and 2.94 eV, respectively (Fig. 2b). Only a trace of D—A emission at 2.7 eV from pure ZnSe is observed in this case. The edge luminescence is completely thermally quenched at temperatures higher than 200 K. The line of highest photon energy remains unquenched up to room temp ...
... bands appear at 3.098 eV and 2.94 eV, respectively (Fig. 2b). Only a trace of D—A emission at 2.7 eV from pure ZnSe is observed in this case. The edge luminescence is completely thermally quenched at temperatures higher than 200 K. The line of highest photon energy remains unquenched up to room temp ...
Magnetic order from molecular oxygen anions Riyadi, Syarif
... layers (graphene) by creating defects [23]. Moreover, the detection of spin transport in single carbon layers (graphene) placed between two ferromagnetic cobalt electrodes has been demonstrated [24]. The low spin-orbit coupling of 2p-electron materials such as carbon is advantageous for spin-injecti ...
... layers (graphene) by creating defects [23]. Moreover, the detection of spin transport in single carbon layers (graphene) placed between two ferromagnetic cobalt electrodes has been demonstrated [24]. The low spin-orbit coupling of 2p-electron materials such as carbon is advantageous for spin-injecti ...
No Slide Title
... ac losses may be calculated from the area of the magnetization hysteresis loop (remember this is only the work done by the external field, transport current loss is extra) ...
... ac losses may be calculated from the area of the magnetization hysteresis loop (remember this is only the work done by the external field, transport current loss is extra) ...
Manufacturing Processes - Philadelphia University Jordan
... Imperfections in Crystals • Usually, crystal structures are not perfect. The imperfections (defects) arise due to the inability of the solidifying material to continue the replication of the unit cell indefinitely without interruption (grain boundaries are an example). • In some other cases, these ...
... Imperfections in Crystals • Usually, crystal structures are not perfect. The imperfections (defects) arise due to the inability of the solidifying material to continue the replication of the unit cell indefinitely without interruption (grain boundaries are an example). • In some other cases, these ...
Topological Defects 18.354 L24 Order Parameters, Broken Symmetry, and Topology James P. Sethna
... will a low freFor a identified crystal,(figure the important degrees of freedom are as5). This space is called RP 2 by the or helium atoms inexcitations the material. quency. Thesepairs low–frequency elementary are the The corr sociatedmathematicians with the broken translational order. (the project ...
... will a low freFor a identified crystal,(figure the important degrees of freedom are as5). This space is called RP 2 by the or helium atoms inexcitations the material. quency. Thesepairs low–frequency elementary are the The corr sociatedmathematicians with the broken translational order. (the project ...
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.