Synthesis, structure, and magnetic properties of new layered phosphate halides Sr2Cu5(PO4)4X2·8H2O (X = Cl, Br) with a crown-like building unit

2017 ◽  
Vol 46 (13) ◽  
pp. 4461-4466 ◽  
Author(s):  
Chaoqun Qiu ◽  
Zhangzhen He ◽  
Meiyan Cui ◽  
Yingying Tang ◽  
Sihuai Chen
Keyword(s):  
Magnetic Properties ◽  
Hydrothermal Method ◽  
Layered Structure ◽  
Building Unit ◽  
New Compounds ◽  
Layered Phosphate

New compounds Sr2Cu5(PO4)4X2·8H2O (X = Cl and Br) are synthesized by a conventional hydrothermal method, showing a layered structure with a crown-like building unit.

Structure, Microstructure and Magnetic Properties of Co x Ni 1 0 0 − x Powders Synthesized by Hydrothermal Method

2017 ◽  
Vol 30 (8) ◽  
pp. 2219-2225 ◽  
Author(s):  
A. Bensouilah ◽  
A. Guittoum ◽  
M. Hemmous ◽  
A. Bouremana ◽  
B. Rahal ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Hydrothermal Method ◽  
Microstructure And Magnetic Properties

Magnetic properties of the new compounds (, Dy, Ho, Er and Lu)

1998 ◽  
Vol 10 (48) ◽  
pp. 11055-11065 ◽  
Author(s):  
C Piquer ◽  
M Artigas ◽  
J Rubín ◽  
J Bartolomé
Keyword(s):  
Magnetic Properties ◽  
New Compounds

Hydrothermal synthesis of octahedra-based layered niobium oxide and its catalytic activity as a solid acid

2014 ◽  
Vol 4 (12) ◽  
pp. 4250-4257 ◽  
Author(s):  
Toru Murayama ◽  
Junli Chen ◽  
Jun Hirata ◽  
Keeko Matsumoto ◽  
Wataru Ueda
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Layered Structure ◽  
Niobium Oxide ◽  
Solid Acid ◽  
Structure Type ◽  
Niobium Oxides

Layered-structure-type niobium oxides were synthesized by the hydrothermal method by using ammonium niobium oxalate as a precursor.

Solvothermal Syntheses, Crystal Structures of Two New Thioantimonates(III) of the Mn2(L)Sb2S5 Family with L = Diethylenetriamine and N-Methyl-1,3-Diaminopropane and a Study of the Magnetic Properties of Four Compounds of the Series

2004 ◽  
Vol 59 (8) ◽  
pp. 869-876 ◽  
Author(s):  
L. Engelke ◽  
R. Stähler ◽  
M. Schur ◽  
C. Näther ◽  
W. Bensch ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Elevated Temperatures ◽  
Exchange Interactions ◽  
Building Blocks ◽  
Monoclinic Space Group ◽  
Antiferromagnetic Materials ◽  
Distorted Octahedra ◽  
Secondary Building Units ◽  
Low Dimensional ◽  
New Compounds

AbstractThe two new compounds Mn2(L)Sb2S5 (L = diethylenetriamine = DIEN, N-methyl-1,3- diaminopropane = MDAP) were prepared under solvothermal conditions using the elements as starting materials. Both compounds crystallise in the monoclinic space group P21/c with the lattice parameters a=10.669(7), b=12.805(2), c=12.072(1)Å , β =115.786(7)°,V =1485.1(4) Å3 for L = DIEN and a = 10.1859(7), b = 12.7806(6), c = 12.1256(8)Å , β = 110.173(8)°, V = 1481.7(2) Å3 for L = MDAP and Z = 4. The primary building units are SbS3 pyramids, MnS6 and MnS4N2 distorted octahedra. These primary building blocks are interconnected to form Mn2Sb2S4 hetero-cubane units. The hetero-cubanes share common corners, edges and faces thus forming a second heterocubane. These secondary building units are joined to form layers within the (100) plane. The connection mode yields ellipsoidal pores within the layers. The amines are exclusively bound to one of the two crystallographically independent Mn2+ cations and they point into the pores and between the layers separating the layers from each other. The interlayer separation and the size of the pores depend on the sterical requirements of the amine incorporated into the network. A pronounced distortion of the MnS4N2 octahedron results from a significant elongation of one Mn-S distance from 2.866 Å (L = methylamine, MA) to 3.185 Å for L = MDAP. The magnetic susceptibility curves are typical for low-dimensional antiferromagnetic materials and the large negative values for the Weiss constant Θ indicate strong antiferromagnetic exchange interactions. The magnetic properties are significantly influenced by the change of the Mn-S bonds introduced by the different amines. The compounds decompose at elevated temperatures with a two step reaction for L = MA and ethylenediamine and in a one step reaction for the bidentate acting amine molecules.

Intercalation of Cu2+in the HNiPO4·H2O Layered Phosphate:  Study of the Structure, Spectroscopic, and Magnetic Properties of the Intercalated Derivative and the Related CuNi2(PO4)2Compound

1999 ◽  
Vol 11 (7) ◽  
pp. 1752-1759 ◽  
Author(s):  
Aintzane Goñi ◽  
Luis Lezama ◽  
José Luis Pizarro ◽  
Jaione Escobal ◽  
María Isabel Arriortua ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Layered Phosphate

Phase formations and magnetic properties of single crystal nickel ferrite (NiFe2O4) with different morphologies

CrystEngComm ◽  
2015 ◽  
Vol 17 (7) ◽  
pp. 1603-1608 ◽  
Author(s):  
Aixian Shan ◽  
Xue Wu ◽  
Jing Lu ◽  
Chinping Chen ◽  
Rongming Wang
Keyword(s):  
Magnetic Properties ◽  
Single Crystal ◽  
Hydrothermal Method ◽  
Nickel Ferrite ◽  
Nano Rods

Nickel ferrite nanomaterials with different morphologies, including nano-spheres, nano-rods and nano-octahedrons have been synthesized by a single mild hydrothermal method at 160 °C without any surfactant.

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