A triple-bridged azido-Cu(ii) chain compound fine-tuned by mixed carboxylate/ethanol linkers displays slow-relaxation and ferromagnetic order: synthesis, crystal structure, magnetic properties and DFT calculations

2014 ◽  
Vol 43 (41) ◽  
pp. 15359-15366 ◽  
Author(s):  
Xiangyu Liu ◽  
Sanping Chen ◽  
Thais Grancha ◽  
Emilio Pardo ◽  
Hongshan Ke ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Dft Calculations ◽  
Slow Relaxation ◽  
Ferromagnetic Order ◽  
Chain Compound

A triple-bridged azido-Cu(ii) compound has been synthesized and magnetically characterized.

La- and Lu-agardite – preparation, crystal structure, vibrational and magnetic properties

2020 ◽  
Vol 75 (1-2) ◽  
pp. 191-199
Author(s):  
Aleksandr M. Golubev ◽  
Eva Brücher ◽  
Armin Schulz ◽  
Reinhard K. Kremer ◽  
Robert Glaum
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Dft Calculations ◽  
Powder Diffraction ◽  
Hexagonal Structure ◽  
Water Molecules ◽  
X Ray ◽  
Bond Lengths ◽  
Inner Diameter ◽  
Low Dimensional

AbstractPolycrystalline samples of La- and Lu-agardite with the composition RECu6(OH)6(AsO4)3 · n H2O (RE = La, Lu; n≈3) have been prepared and the structure of the products was determined by X-ray powder diffraction studies. The characterization has been complemented by Raman and UV/Vis spectroscopic, magnetic and TGA investigations. DFT calculations support the conclusions drawn from the experiments. The arsenates RECu6(OH)6(AsO4)3 · n H2O (RE = La, Lu; n≈3) are isostructural with the mineral mixite and crystallize with a hexagonal structure which contains ribbons of edge-sharing [CuO5] square-pyramids extending along the hexagonal axis. They are interconnected via (AsO4)3− groups to form hexagonal tubes of about 10 Å inner diameter. Such zeolite-like tubes host water molecules, which can be reversibly removed at moderate temperatures (T≈100°C). Like in mixite and YCu6(OH)6(AsO4)3 · 3 H2O, the Cu2+ cations in RECu6(OH)6(AsO4)3 · n H2O (RE = La, Lu; n≈3) exhibit low-dimensional antiferromagnetic properties, which are subject to changes in the Cu–O–Cu bond lengths and angles due to the lanthanide contraction.

ChemInform Abstract: Crystal Structure and Magnetic Properties and Zn Substitution Effects on the Spin-Chain Compound Sr3Co2O6.

ChemInform ◽  
2013 ◽  
Vol 44 (36) ◽  
pp. no-no
Author(s):  
Xia Wang ◽  
Yanfeng Guo ◽  
Ying Sun ◽  
Yoshihiro Tsujimoto ◽  
Yoshitaka Matsushita ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Spin Chain ◽  
Substitution Effects ◽  
Zn Substitution ◽  
Chain Compound

New copper(II)-radical one dimensional chain: Synthesis, crystal structure, EPR, magnetic properties and DFT calculations

2009 ◽  
pp. 6816 ◽  
Author(s):  
Denise A. Souza ◽  
Antonio S. Florencio ◽  
Stéphane Soriano ◽  
Rafael Calvo ◽  
Rosana P. Sartoris ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Dft Calculations ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Chain Synthesis

Formation of Ferromagnetic/Ferroelectric Superlattices by a Laser MBE and Their Electric & Magnetic Properties

1997 ◽  
Vol 494 ◽  
Author(s):  
Hitoshi Tabata ◽  
Kenji Ueda ◽  
Tomoji Kawai
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Spin Structure ◽  
Piezoelectric Effect ◽  
Ferromagnetic Material ◽  
Ferromagnetic Order ◽  
Laser Mbe ◽  
Perovskite Type ◽  
Laser Ablation Technique ◽  
Similar Crystal Structure

ABSTRACTWe have constructed artificial superlattices with a combination of magnetic/magnetic and ferroelectric/ferromagnetic materials using a laser ablation technique. An ideal hetero-epitaxy can be obtained due to the similar crystal structure of the perovskite type di/ferroelectric BaTiO3, Pb(Zr,Ti)O3 (so-called PZT), SrTiO3 and ferro/antiferromagnetic LaFeO3, LaCrO3, (La,Sr)MnO3. First of all, we have controlled ferromagnetic order on LaFeO3/LaCrO3 superlattices formed on SrTiO3(l11) substrate. Such a spin structure(ferromagnetic order) can't be got in bulk condition. In the heterostructured ferromagnetic /ferroelectric devices, (La,Sr)MnO3/PZT there are remarkable and interesting phenomena. The electric properties of the ferromagnetic material can be controlled by the piezoelectric effect via distortion of the crystal structure.

scholarly journals Syntheses, Crystal Structure and Magnetic Properties of Tl9RETe6 (RE = Ce, Sm, Gd)

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 277
Author(s):  
Anna Isaeva ◽  
Rico Schönemann ◽  
Thomas Doert
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Rare Earth ◽  
Dft Calculations ◽  
Magnetic Order ◽  
Earth Metal ◽  
Magnetic Data ◽  
Range Magnetic Order ◽  
Long Range Magnetic Order ◽  
Derivatives Of

The three compounds Tl9RETe6 with RE = Ce, Sm, Gd were synthesized from the elements at 1020 K. Their isostructural crystal structures are ordered derivatives of the Tl5Te3 type with rare-earth metal and thallium occupying different Wyckoff positions. The structures can be understood as charge-ordered in accordance with the Zintl-Klemm concept: 9 Tl+ + RE3+ + 6 Te2−. DFT calculations for Tl9GdTe6, however, result in a low, but finite density of states at the Fermi level. Magnetic data confirm trivalent Gd, but indicate a small amount of Ce4+ in Tl9CeTe6; no indications for long-range magnetic order was found down to T = 2 K.

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