scholarly journals Origin of Ising magnetism in Ca3Co2O6 unveiled by orbital imaging

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Brett Leedahl ◽  
Martin Sundermann ◽  
Andrea Amorese ◽  
Andrea Severing ◽  
Hlynur Gretarsson ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Quantum Tunneling ◽  
One Dimensional ◽  
X Ray ◽  
X Ray Scattering ◽  
The One ◽  
Orbital Imaging ◽  
Local Crystal Structure ◽  
Orbital Occupation

AbstractThe one-dimensional cobaltate Ca$${}_{3}$$3Co$${}_{2}$$2O$${}_{6}$$6 is an intriguing material having an unconventional magnetic structure, displaying quantum tunneling phenomena in its magnetization. Using a newly developed experimental method, $$s$$s-core-level non-resonant inelastic x-ray scattering ($$s$$s-NIXS), we were able to image the atomic Co $$3d$$3d orbital that is responsible for the Ising magnetism in this system. We can directly observe that corrections to the commonly accepted ideal prismatic trigonal crystal field scheme occur in Ca$${}_{3}$$3Co$${}_{2}$$2O$${}_{6}$$6, and it is the complex $${d}_{2}$$d2 orbital occupied by the sixth electron at the high-spin Co$${}_{\,\text{trig}\,}^{3+}$$trig3+ ($${d}^{6}$$d6) sites that generates the Ising-like behavior. The ability to directly relate the orbital occupation with the local crystal structure is essential to model the magnetic properties of this system.

Synthesis, Structures and Magnetic Properties of a Family of One-Dimensional Oxides

1996 ◽  
Vol 453 ◽  
Author(s):  
H.-C. Zur Loye ◽  
P. Núñez ◽  
M. A. Rzeznik
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Rietveld Refinement ◽  
Diffraction Data ◽  
X Ray Diffraction ◽  
Magnetic Susceptibility Data ◽  
One Dimensional ◽  
X Ray ◽  
Susceptibility Data ◽  
The One

AbstractThe one-dimensional compounds Sr3MgPtO6, Sr3MgIrO6, Sr3MgRhO6, Sr3GdRhO6, have been synthesized and structurally characterized by Rietveld refinement of powder X-ray diffraction data. All four compounds are isostructural with the rhombohedral K4CdCl6-type structure. The structure consists of infinite one-dimensional chains of alternating face-shared MO6 octahedra (M = Pt, Ir, Rh) and M′O6 (M′ = Gd, Mg) trigonal prisms. The strontium cations are located in a distorted square antiprismatic environment. Magnetic susceptibility data show that both Sr3MgIrO6 and Sr3MgRhO6 obey the Curie-Weiss law with θ = −6(1) K, and θ= −15(3)K, respectively. Sr3GdRhO6 obeys the Curie law with μeff = 7.80 B.M, consistent with an oxidation state of +3 for both rhodium and gadolinium.

scholarly journals Resonant inelastic x-ray scattering at the FeL3edge of the one-dimensional chalcogenide BaFe2Se3

2013 ◽  
Vol 88 (16) ◽  
Author(s):  
C. Monney ◽  
A. Uldry ◽  
K. J. Zhou ◽  
A. Krzton-Maziopa ◽  
E. Pomjakushina ◽  
...  
Keyword(s):  
One Dimensional ◽  
X Ray ◽  
X Ray Scattering ◽  
The One ◽  
Ray Scattering

scholarly journals Magnetic properties of a new cobalt hydrogen vanadate with a dumortierite-like structure: Co13.5(OH)6(H0.5VO3.5)2(VO4)6

2019 ◽  
Vol 75 (6) ◽  
pp. 777-782
Author(s):  
Mohammed Hadouchi ◽  
Abderrazzak Assani ◽  
Mohamed Saadi ◽  
Abdelilah Lahmar ◽  
Mimoun El Marssi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Single Crystal ◽  
Magnetic Measurements ◽  
Crystal Form ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Pyramidal Groups ◽  
Scanning Electron

The magnetic properties of a novel cobalt-based hydrogen vanadate, Co13.5(OH)6(H0.5VO3.5)2(VO4)6, are reported. This new magnetic material was synthesized in single-crystal form using a conventional hydrothermal method. Its crystal structure was determined from single-crystal X-ray diffraction data and was also characterized by scanning electron microscopy. Its crystal framework has a dumortierite-like structure consisting of large hexagonal and trigonal channels; the large hexagonal channels contain one-dimensional chains of face-sharing CoO6 octahedra linked to the framework by rings of VO4 tetrahedra, while the trigonal channels are occupied by chains of disordered V2O4 pyramidal groups. The magnetic properties of this material were investigated by DC magnetic measurements, which indicate the occurrence of antiferromagnetic interactions.

One-Dimensional Chained Polymer Constructed by 3-Indolepropionic Acid and 2,2'-Bipyridinium

2013 ◽  
Vol 454 ◽  
pp. 276-279
Author(s):  
Li Hua Wang ◽  
Zhi Xiang Ji
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Network Structure ◽  
Ethanol Solution ◽  
Monoclinic Space Group ◽  
Single Crystal Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
3D Network ◽  
The One

The crystals of one-dimensional chained polymer constructed by 3-indolepropionic acid and 2,2-bipyridinium have been synthesized by evaporation from ethanol solution. The crystal structure of one-dimensional chained polymer was determined by X-ray single crystal diffraction analysis. The results shows that the polymer belongs to monoclinic, space group P2(1)/c, a = 5.2557(11) Å, b = 12.249(2) Å, c = 21.467(4) Å, V = 1380.1(5) Å3, Z = 2, Mr = 531.58, De = 1.279 g/cm3, T = 293(2) K, F (000) = 558, R = 0.1136 and wR = 0.3376. The compound forms one-dimensional chained polymer through hydrogen bonds. 3D network structure was constructed by the interaction of the one-dimensional chained polymer.

scholarly journals One-dimensional Coordination Polymer {[Tm2(ttha)(H2O)6Tm2(ttha)(H2O)4] · 21 H2O}n: Synthesis, Crystal Structure, Thermal Behavior and Magnetism (H6ttha = Triethylenetetraminehexaacetic Acid)

1999 ◽  
Vol 23 (8) ◽  
pp. 464-465
Author(s):  
Baoqing Ma ◽  
Song Gao ◽  
Tianzhu Jin ◽  
Zheming Wang ◽  
Tao Yi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Coordination Polymer ◽  
Thermal Behavior ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
A Chain ◽  
Chain Compound

The reaction of H6ttha and Tm2O3 gives a chain compound determined by X-ray diffraction; its thermal behavior and magnetic properties are also studied.

Ein Beitrag zur Synthese und Kristallchemie des Alkalimetall-Kupfer -Oxomolybdats Rb0,6K0,4CuMo3O10 / A Contribution on the Synthesis and Crystal Chemistry of the Alkaline Copper Oxomolybdate Rb0.6K0.4CuMo3O10

1995 ◽  
Vol 50 (6) ◽  
pp. 875-878 ◽  
Author(s):  
H. Szillat ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Crystal Chemistry ◽  
Orthorhombic Symmetry ◽  
One Dimensional ◽  
X Ray ◽  
The One ◽  
Group D ◽  
Symmetry Space ◽  
Symmetry Space Group

Single crystals of Rb0.6K0.4CuMo3O10 have been prepared by crystallization from melts and investigated by X-ray diffractometer technique. They crystallize with orthorhombic symmetry, space group D2h16 -Pnma , a = 8.606(2), b = 7.595(3), c - 13.660(7) Å, Z = 4. The crystal structure of Rb0.6K0.4CuMo3O10 is characterized by the rare octahedral coordination of molybdenum and is related to (NH4)2Mo3O10 with respect to the one-dimensional 1∞[Mo3O10]- chains.

The synthesis, crystal structure and magnetic properties of a one-dimensional terbium(III)–octacyanidomolybdate(V) assembly

2014 ◽  
Vol 70 (12) ◽  
pp. 1169-1173 ◽  
Author(s):  
Hong Shen
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Ir Spectroscopy ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Cyanide Ligands ◽  
Ferromagnetic Interactions

A one-dimensional cyanide-bridged coordination polymer, poly[[aquadi-μ-cyanido-κ4C:N-hexacyanido-κ6C-(dimethylformamide-κO)bis(3,4,7,8-tetramethyl-1,10-phenanthroline-κ2N,N′)terbium(III)molybdate(V)] 4.5-hydrate], [MoTb(CN)8(C16H16N2)2(C3H7NO)(H2O)]·4.5H2O}n, has been prepared and characterized through IR spectroscopy, elemental analysis and single-crystal X-ray diffraction. The compound consists of one-dimensional chains in which cationic [Tb(tmphen)2(DMF)(H2O)]3+(tmphen is 3,4,7,8-tetramethyl-1,10-phenanthroline) and anionic [MoV(CN)8]3−units are linked in an alternating fashion through bridging cyanide ligands. Neighbouring chains are connected by three types of hydrogen bonds (O—H...O, O—H...N and C—H...O) and by π–π interactions to form a three-dimensional supramolecular structure. In addition, magnetic investigations show that ferromagnetic interactions exist in the compound.

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