Crystal structure and magnetic behavior of (tetramethylcyclotetraazatetradecatetraene) copper tetrachlorocuprate: an alternating-metal-site, alternating-exchange, spin 1/2 linear-chain system

1991 ◽  
Vol 30 (21) ◽  
pp. 4082-4084 ◽  
Author(s):  
Igor. Vasilevesky ◽  
Norman R. Rose ◽  
Ronald. Stenkamp ◽  
Roger D. Willett
Keyword(s):  
Crystal Structure ◽  
Linear Chain ◽  
Magnetic Behavior ◽  
Chain System ◽  
Metal Site

scholarly journals Helimagnetism in MnBi2Se4 Driven by Spin-Frustrating Interactions Between Antiferromagnetic Chains

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 242
Author(s):  
Judith K. Clark ◽  
Chongin Pak ◽  
Huibo Cao ◽  
Michael Shatruk
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Easy Axis ◽  
Linear Chain ◽  
Magnetic Behavior ◽  
Propagation Direction ◽  
Spin Frustration ◽  
Magnetization Direction ◽  
Turn Angle ◽  
Ordered State

We report the magnetic properties and magnetic structure determination for a linear-chain antiferromagnet, MnBi2Se4. The crystal structure of this material contains chains of edge-sharing MnSe6 octahedra separated by Bi atoms. The magnetic behavior is dominated by intrachain antiferromagnetic (AFM) interactions, as demonstrated by the negative Weiss constant of −74 K obtained by the Curie–Weiss fit of the paramagnetic susceptibility measured along the easy-axis magnetization direction. The relative shift of adjacent chains by one-half of the chain period causes spin frustration due to interchain AFM coupling, which leads to AFM ordering at TN = 15 K. Neutron diffraction studies reveal that the AFM ordered state exhibits an incommensurate helimagnetic structure with the propagation vector k = (0, 0.356, 0). The Mn moments are arranged perpendicular to the chain propagation direction (the crystallographic b axis), and the turn angle around the helix is 128°. The magnetic properties of MnBi2Se4 are discussed in comparison to other linear-chain antiferromagnets based on ternary mixed-metal halides and chalcogenides.

scholarly journals Crystal structure and conductivity of the organometallic linear chain system (Et4N)[Ni(DMIT)2] and related compounds

1987 ◽  
Vol 19 (1-3) ◽  
pp. 745-750 ◽  
Author(s):  
G.J. Kramer ◽  
L.R. Groeneveld ◽  
J.L. Joppe ◽  
H.B. Brom ◽  
L.J. de Jongh ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Linear Chain ◽  
Chain System ◽  
Related Compounds

ChemInform Abstract: Quaternary Gd4Ni2Sb1.+-.xSi2.+-.xand Gd4Ni2Bi1.+-.xSi2.+-.x: Crystal Structure, Homogeneity Regions and Magnetic Behavior.

ChemInform ◽  
2009 ◽  
Vol 40 (35) ◽  
Author(s):  
Volodymyr Svitlyk ◽  
Fan Fei ◽  
Alfred Kracher ◽  
Yurij Mozharivskyj
Keyword(s):  
Crystal Structure ◽  
Magnetic Behavior

scholarly journals STRUCTURAL CHARACTERIZATION OF THE NEW DIAMOND-LIKE SEMICONDUCTOR CuNbGaSe3

2018 ◽  
Vol 15 (29) ◽  
pp. 228-233
Author(s):  
J. A. FLORES-CRUZ ◽  
G. E. DELGADO ◽  
J. E. CONTRERAS ◽  
M. QUINTERO ◽  
L. NIEVES ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Behavior ◽  
Secondary Phase ◽  
Chalcopyrite Structure ◽  
Unit Cell Parameters ◽  
X Ray ◽  
Cell Parameters ◽  
Chalcogenide Compound ◽  
Semiconductor Type

The chalcogenide compound CuNbGaSe3, belonging to the system I-II-III-VI3, has been investigated by means of X-ray powder diffraction and its crystal structure has been refined by the Rietveld method.This is a material of the semiconductor type, which improves the properties of a simple semiconductor like CuGaSe2 because it ads spintronic applications due to its magnetic behavior. The powder pattern was composed by 94.2% of the principal phase CuNbGaSe3 and 5.8% of the secondary phase Cu0.667NbSe2. This material crystallizes with a CuFeInSe3-type structure in the tetragonal space group P4 2c (Nº 112), unit cell parameters a = 5.6199(4) Å, c = 11.0275(2) Å, V = 348.28(4) Å3, with a normal adamantane-structure where occurs a degradation of symmetry from the chalcopyrite structure I4 2d to a related structure P4 2c.

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