scholarly journals Properties of a two-orbital model for oxypnictide superconductors: Magnetic order,B2gspin-singlet pairing channel, and its nodal structure

2009 ◽  
Vol 79 (13) ◽  
Author(s):  
A. Moreo ◽  
M. Daghofer ◽  
J. A. Riera ◽  
E. Dagotto
Keyword(s):  
Magnetic Order ◽  
Nodal Structure

MAGNETIC ORDER IN THE Yb INTERMEDIATE VALENT SYSTEM R0.14Yb0.36In0.5Cu2 (R = Eu, Gd)

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-733-C8-734 ◽  
Author(s):  
I. Felner ◽  
I. Nowik ◽  
Y. Yeshurun
Keyword(s):  
Magnetic Order ◽  
Intermediate Valent

MAGNETIC ORDER IN VERY DILUTED Y-Er ALLOYS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-363-C8-364 ◽  
Author(s):  
R. Caudron ◽  
H. Bouchiat ◽  
P. J. Brown ◽  
P. Monod ◽  
J. L. Tholence
Keyword(s):  
Magnetic Order

Magnetic Ordering via Itinerant Ferromagnetism in a Metal-Organic Framework

2020 ◽  
Author(s):  
Jesse Park ◽  
Brianna Collins ◽  
Lucy Darago ◽  
Tomce Runcevski ◽  
Michael Aubrey ◽  
...  
Keyword(s):  
Charge Transport ◽  
Magnetic Order ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Magnetic Ordering ◽  
Double Exchange ◽  
Itinerant Ferromagnetism ◽  
Organic Solids ◽  
Metal Organic ◽  
Organic Framework

<b>Materials that combine magnetic order with other desirable physical attributes offer to revolutionize our energy landscape. Indeed, such materials could find transformative applications in spintronics, quantum sensing, low-density magnets, and gas separations. As a result, efforts to design multifunctional magnetic materials have recently moved beyond traditional solid-state materials to metal–organic solids. Among these, metal–organic frameworks in particular bear structures that offer intrinsic porosity, vast chemical and structural programmability, and tunability of electronic properties. Nevertheless, magnetic order within metal–organic frameworks has generally been limited to low temperatures, owing largely to challenges in creating strong magnetic exchange in extended metal–organic solids. Here, we employ the phenomenon of itinerant ferromagnetism to realize magnetic ordering at <i>T</i><sub>C</sub> = 225 K in a mixed-valence chromium(II/III) triazolate compound, representing the highest ferromagnetic ordering temperature yet observed in a metal–organic framework. The itinerant ferromagnetism is shown to proceed via a double-exchange mechanism, the first such observation in any metal–organic material. Critically, this mechanism results in variable-temperature conductivity with barrierless charge transport below <i>T</i><sub>C</sub> and a large negative magnetoresistance of 23% at 5 K. These observations suggest applications for double-exchange-based coordination solids in the emergent fields of magnetoelectrics and spintronics. Taken together, the insights gleaned from these results are expected to provide a blueprint for the design and synthesis of porous materials with synergistic high-temperature magnetic and charge transport properties. </b>

Synthesis, characterization and magnetic order in poly-3-(3’-thienyl-5’-phenylverdazyl)thiophene

2004 ◽  
Vol 29 (4) ◽  
pp. 55-61 ◽  
Author(s):  
Mohamed Hmyene ◽  
Abdelillah Hakam ◽  
Herbert Naarmann ◽  
Elmar Dormann
Keyword(s):  
Magnetic Order
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