نتایج جستجو برای: paramagnetism

تعداد نتایج: 415  

Journal: :Chemical communications 2012
Simon Turega Martina Whitehead Benjamin R Hall Mairi F Haddow Christopher A Hunter Michael D Ward

A cubic cage complex assembled from twelve bis-bidentate ligands and eight Co(II) ions provides a cavity that selectively recognises and binds coumarin in MeCN solution. The cage portals are large enough to allow guest exchange, but small enough to provide a kinetic trap; the cage paramagnetism facilitates detailed NMR analysis.

Journal: :Chemical communications 2012
Lin-Juan Zhang Jian-Qiang Wang Jiong Li Jing Zhou Wu-Peng Cai Jie Cheng Wei Xu Guangzhi Yin Xiang Wu Zheng Jiang Shuo Zhang Zi-Yu Wu

The modulation of the distribution of magnetic ions embedded in the host is crucial for the functionality of dilute magnetic semiconductors. Through an element-specific structural characterization, we observe the formation and enhancement of an unrevealed Co-doped ZnO phase and consequently magnetic properties from paramagnetism to ferromagnetism are controlled by surface-modification.

Journal: :Dalton transactions 2015
Stephen J Osborne Sil Wellens Chris Ward Solveig Felton Robert M Bowman Koen Binnemans Małgorzata Swadźba-Kwaśny H Q Nimal Gunaratne Peter Nockemann

Temperature-dependent switching of paramagnetism of a cobalt(II) complex is observed in an ionic liquid solution. Paramagnetic and thermochromic switching occur simultaneously due to a reversible change in coordination. This reversible switching is possible in the ionic liquid solution, which enables mobility of thiocyanate anions by remaining mobile at low temperatures and acts as an anion res...

Journal: :Journal of Physics and Chemistry of Solids 2010

Journal: :Journal of Astrophysics and Astronomy 2017

Journal: :Dalton transactions 2008
Ivano Bertini Claudio Luchinat Giacomo Parigi Roberta Pierattelli

NMR experiments and tools for the characterization of the structure and dynamics of paramagnetic proteins are presented here. The focus is on the importance of (13)C direct-detection NMR for the assignment of paramagnetic systems in solution, on the information contained in paramagnetic effects observed both in solution and in the solid state, and on novel paramagnetism-based tools for the inve...

2005
E. Miranda

We present the ground state phase diagram of the two-leg Kondo ladder obtained through the density-matrix renormalization group. At half-filling, the spin and charge gaps are non-zero. At other conduction electron densities, we have found fully and partially saturated ferromagnetism, paramagnetism, and dimerized phases at special commensurate fillings. r 2005 Elsevier B.V. All rights reserved. ...

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