We report an organo-paramagnetic switch consisting of a linked bis(viologen) dication diradical that can be cycled reversibly between diamagnetic and paramagnetic states via noncovalent guest-host chemistry with cucurbit[7]uril (CB[7]) in room-temperature water. Computations suggest that the nature of the interaction between the viologen cation radical units is that of a pi dimer (pimer). Molec...

In numerous biominerals exposed to ionizing radiation some stable paramagnetic species are induced. Their nature can differ depending on chemical composition of biominerals. The method of choice to study paramagnetic centers in biominerals is electron paramagnetic resonance (EPR) spectroscopy. When the relationship between EPR signal intensity of stable paramagnetic center and the dose has a li...

An overview of some structural aspects of magnetic ordering is presented. Magnetic symmetry operations, point groups, and Bravais lattices will be utilized to describe the magnetic symmetry of various magnetic materials. Throughout the talk, the utilization of the theory of magnetic symmetry will be emphasized. The magnetic space groups of Fe, Co, Ni, α’-FeCo, CoPt, CrPt3, and Cu2MnAl will be e...

Most existing solids are categorised as diamagnetic or weak paramagnetic materials. The possibility of magnetic motion has not been intensively considered for these materials. Here, we demonstrate for the first time that ensembles of heterogeneous particles (diamagnetic bismuth, diamond and graphite particles, as well as two paramagnetic olivines) can be dynamically separated into five fraction...

in paramagnetic inverse magnetocaloric systems Jing-Han Chen, Nickolaus M. Bruno, Ibrahim Karaman, Yujin Huang, Jianguo Li, and Joseph H. Ross, Jr. Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, USA Department of Materials Science and Engineering, Texas A&M Uni...

in this study we report the rock magnetic properties of surface soil samples and their spatialvariability from the northernmost district of kerala to understand pedogenic processes and soil erosion. themagnetic signal is mainly from fine grained pedogenic magnetite as other sources like anthropogenic andlithogenic magnetite, bacterial magnetite and greigite are absent. the surface soil samples ...

Dispersed detonation nanodiamonds have been studied by continuous-wave (CW) and pulse EPR techniques. The spectrum of bulk radicals (g = 2.0025 ± 0.0002, a Lorentz line shape with ΔHpp = 0.95 ± 0.05 mT) dominated in CW EPR and prevented to record spectra from other paramagnetic species. The pulse EPR spectrum was the superposition of the distorted P1-center spectrum with parameters (g = 2.0025,...

High permittivity materials find extensive use in high frequency communications devices due to their small size (compared to lumped element circuits), low losses and physical robustness. Recently, these types of materials have been applied in high field magnetic resonance imaging, based upon earlier work in electron paramagnetic resonance. This review article describes the basic properties of h...