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Cardiel AC, McDonald KJ, Choi KS. Electrochemical Growth of Copper Hydroxy Double Salt Films and Their Conversion to Nanostructured p-Type CuO Photocathodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:9262-9270. [PMID: 28570069 DOI: 10.1021/acs.langmuir.7b00588] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
New electrochemical synthesis methods were developed to produce copper hydroxy double salt(Cu-HDS) films with four different intercalated anions (NO3-, SO42-, Cl-, and dodecyl sulfate (DS)) as pure crystalline films as deposited (Cu2NO3(OH)3, Cu4SO4(OH)6, Cu2Cl(OH)3, and Cu2DS(OH)3). These methods are based on p-benzoquinone reduction, which increases the local pH at the working electrode and triggers the precipitation of Cu2+ and appropriate anions as Cu-HDS films on the working electrode. The resulting Cu-HDS films could be converted to crystalline Cu(OH)2 and CuO films by immersing them in basic solutions. Because Cu-HDS films were composed of 2D crystals as a result of the atomic-level layered structure of HDS, the CuO films prepared from Cu-HDS films have unique low-dimensional nanostructures, creating high surface areas that cannot be obtained by direct deposition of CuO, which has a 3D atomic-level crystal structure. The resulting nanostructures allowed the CuO films to facilitate electron-hole separation and demonstrate great promise for photocurrent generation when investigated as a photocathode for a water-splitting photoelectrochemical cell. Electrochemical synthesis of Cu-HDS films and their facile conversion to CuO films will provide new routes to tune the morphologies and properties of the CuO electrodes that may not be possible by other synthesis means.
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Affiliation(s)
- Allison C Cardiel
- Department of Chemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Kenneth J McDonald
- Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States
| | - Kyoung-Shin Choi
- Department of Chemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
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Selvamani T, Manjula CA, Anandan S, Asiri AM, Ashokkumar M. Preparation of CuO mesocrystals via antlerite intermediate for photocatalytic applications. CRYSTAL RESEARCH AND TECHNOLOGY 2015. [DOI: 10.1002/crat.201400145] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- T. Selvamani
- Nanomaterials and Solar Energy Conversion Lab; Department of Chemistry, National Institute of Technology; Tiruchirappalli-620 015 India
| | - C. A. Manjula
- Nanomaterials and Solar Energy Conversion Lab; Department of Chemistry, National Institute of Technology; Tiruchirappalli-620 015 India
| | - S. Anandan
- Nanomaterials and Solar Energy Conversion Lab; Department of Chemistry, National Institute of Technology; Tiruchirappalli-620 015 India
| | - A. M. Asiri
- The Center of Excellence for Advanced Materials Research (CEAMR); King Abdulaziz University; Jeddah 21413, P.O. Box 80203 Saudi Arabia
| | - Muthupandian Ashokkumar
- The Center of Excellence for Advanced Materials Research (CEAMR); King Abdulaziz University; Jeddah 21413, P.O. Box 80203 Saudi Arabia
- School of Chemistry; University of Melbourne; Vic 3010 Australia
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Fujii Y, Kikuchi H, Nakagawa K, Takada SY, Fujisawa M. 1H-NMR Study of Spin-1/2 Triple-chain Magnet Cu3(OH)4MoO4. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.phpro.2015.12.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Bissengaliyeva MR, Bekturganov NS, Gogol DB, Taimassova ST, Koketai TA, Bespyatov MA. Heat Capacities of Natural Antlerite and Brochantite at Low Temperature. JOURNAL OF CHEMICAL AND ENGINEERING DATA 2013; 58:2904-2912. [PMID: 24249917 DOI: 10.1021/je400130b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 10/08/2013] [Indexed: 06/02/2023]
Abstract
The investigation of a magnetic component of the heat capacity of natural samples of copper sulfates antlerite Cu3SO4(OH)4 in the temperature range below 40 K and brochantite Cu4SO4(OH)6 below 55 K has been carried out. A regular component of the heat capacity has been calculated from experimental data of adiabatic calorimetry. In the low-temperature area of (0 to 55) K two peaks of magnetic heat capacity for brochantite have been registered. The contributions of anomalous component ΔStr into entropy of the minerals are (11 ± 3) J·mol-1·K-1 for antlerite and (5.3 ± 1.5) J·mol-1·K-1 for brochantite.
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Affiliation(s)
- Mira R Bissengaliyeva
- Institute of Complex Development of Mineral Resources , Ippodromnaya Street 5, Karaganda, 100019, Kazakhstan
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Burrows AD, Mahon MF, Sebestyen VM, Lan Y, Powell AK. Synthesis, Structures, And Magnetic Behavior of New Anionic Copper(II) Sulfate Aggregates and Chains. Inorg Chem 2012; 51:10983-9. [DOI: 10.1021/ic301478x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrew D. Burrows
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Mary F. Mahon
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | | | - Yanhua Lan
- Institut für Anorganische
Chemie, Karlsruhe Institute of Technology, Engesserstrasse 15, D76131 Karlsruhe, Germany
| | - Annie K. Powell
- Institut für Anorganische
Chemie, Karlsruhe Institute of Technology, Engesserstrasse 15, D76131 Karlsruhe, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz
Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Zhao X, Chen Z, Zhao B, Shi W, Cheng P. Crystal structures and luminescent properties of two novel coordination polymers containing Ln3+ and. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2007.08.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Vilminot S, André G, Bourée-Vigneron F, Richard-Plouet M, Kurmoo M. Magnetic Properties and Magnetic Structures of Cu3(OD)4XO4, X = Se or S: Cycloidal versus Collinear Antiferromagnetic Structure. Inorg Chem 2007; 46:10079-86. [DOI: 10.1021/ic700900b] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Serge Vilminot
- Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 CNRS-ULP, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France, Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France, Institut des Matériaux Jean Rouxel, UMR CNRS 6502, Université de Nantes, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 03, France, and Laboratoire de Chimie de Coordination Organique, CNRS-UMR7140, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, 67000 Strasbourg Cedex 01, France
| | - Gilles André
- Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 CNRS-ULP, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France, Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France, Institut des Matériaux Jean Rouxel, UMR CNRS 6502, Université de Nantes, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 03, France, and Laboratoire de Chimie de Coordination Organique, CNRS-UMR7140, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, 67000 Strasbourg Cedex 01, France
| | - Francoise Bourée-Vigneron
- Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 CNRS-ULP, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France, Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France, Institut des Matériaux Jean Rouxel, UMR CNRS 6502, Université de Nantes, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 03, France, and Laboratoire de Chimie de Coordination Organique, CNRS-UMR7140, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, 67000 Strasbourg Cedex 01, France
| | - Mireille Richard-Plouet
- Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 CNRS-ULP, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France, Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France, Institut des Matériaux Jean Rouxel, UMR CNRS 6502, Université de Nantes, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 03, France, and Laboratoire de Chimie de Coordination Organique, CNRS-UMR7140, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, 67000 Strasbourg Cedex 01, France
| | - Mohamedally Kurmoo
- Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 CNRS-ULP, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France, Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France, Institut des Matériaux Jean Rouxel, UMR CNRS 6502, Université de Nantes, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 03, France, and Laboratoire de Chimie de Coordination Organique, CNRS-UMR7140, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, 67000 Strasbourg Cedex 01, France
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Vilminot S, André G, Richard-Plouet M, Bourée-Vigneron F, Kurmoo M. Magnetic Structure and Magnetic Properties of Synthetic Lindgrenite, Cu3(OH)2(MoO4)2. Inorg Chem 2006; 45:10938-46. [PMID: 17173452 DOI: 10.1021/ic061182m] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthetic Cu3(OH)2(MoO4)2 consists of Cu3(OH)2 brucite ribbons of edge-sharing copper octahedra connected by MoO4 into a 3D network as in the mineral, lindgrenite, for all temperatures between 1.5 and 300 K. Each ribbon consists of a triangular connection between two different types of copper atom (Cu(1) and 2 Cu(2)) via mu3-OH. The MoO4 acts both as one- and three-atom bridges to connect six Cu atoms belonging to three adjacent ribbons. The magnetic properties are consistent with those of ferrimagnetic chains, and the resulting moment of each chain is parallel below the long-range magnetic ordering at 13 K. The Curie constant is 0.468(1) emu K mol-1 of Cu; the Weiss temperature is -14.2(2) K, and the saturation magnetization at 2 K in 50 kOe is 0.41 N muB mol-1 of Cu. Analyses of the neutron powder diffraction reveal an ordered magnetic state where the moment of Cu(1) is antiparallel to those of the two Cu(2); all of them point along the a axis without any sign of geometrical frustration. Any degeneracy that may be present because of the triangular topology of the Cu atoms (s = 1/2) appears to be lifted by the distortion from an ideal equilateral geometry of the triangle. The entropy, estimated from the heat capacity measurements, attains 50% of the total of 17.7 J K-1 mol-1, close to that expected for three Cu atoms (3R ln 2), up to the long range ordering temperature, and the remaining is associated with the low dimensionality of the material.
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Affiliation(s)
- Serge Vilminot
- Groupe des Matériaux Inorganiques, IPCMS, CNRS-ULP UMR7504, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France.
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Salah MB, Vilminot S, André G, Richard-Plouet M, Mhiri T, Takagi S, Kurmoo M. Nuclear and Magnetic Structures and Magnetic Properties of the Layered Cobalt Hydroxysulfate Co5(OH)6(SO4)2(H2O)4 and Its Deuterated Analogue, Co5(OD)6(SO4)2(D2O)4. J Am Chem Soc 2006; 128:7972-81. [PMID: 16771512 DOI: 10.1021/ja061302p] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The structures (nuclear and magnetic), magnetic properties (2-300 K, 1-10(4) bar), and heat capacity of the layered ferromagnet Co5(OH)6(SO4)2(H2O)4 are reported. The crystal structure consists of brucite-like M(II)-OH layers of edge-sharing octahedra, but having two different Co sites, which are pillared by ...O3SO-Co(H2O)4-OSO3.... The absorption spectrum confirms the presence of divalent Co, and by comparison of the two isotopic materials, the assignment of the vibrational spectra is proposed. The magnetic properties are those of a ferromagnet with a Curie temperature of 14 K. Temperature and field dependence magnetization data taken on an aligned sample suggest an easy-plane magnet. The Curie temperature increases linearly with pressure at a rate of +0.12 K/kbar, suggesting small progressive and uniform modifications of the Co-Co exchange interactions. Rietveld refinement of the neutron powder diffraction data and consideration of a group analysis reveal the direction of the moments of the Co within the layer to be along the b-axis, with a maximum moment of 3.33 micro(B) per cobalt. Those of the pillars remain random. Estimation of the entropy from the heat capacity data accounts for the presence of four ordered moments of Co with spin 1/2 at the long-range ordering temperature, while the moment of the pillaring Co contributes only at lower temperature due to the increase of the internal field as the temperature is lowered. The purely 2D-magnetic ordering in an easy-plane magnet, evidenced by neutron diffraction and heat capacity, challenges the existing theories and is a rare example of a single-layer magnet.
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Affiliation(s)
- Mohsen Ben Salah
- Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 (CNRS-ULP), 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
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Vilminot S, Richard-Plouet M, André G, Swierczynski D, Bourée-Vigneron F, Kurmoo M. Nuclear and magnetic structures and magnetic properties of synthetic brochantite, Cu4(OH)6SO4. Dalton Trans 2006:1455-62. [PMID: 16518515 DOI: 10.1039/b510545e] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu4(OH)6SO4 (1) and Cu4(OD)6SO4 (2) were obtained by hydrothermal syntheses from copper sulfate and sodium hydroxide in H2O and D2O, respectively. They crystallize in the monoclinic system, space group P2(1)/a (14), a = 13.1206(5), b = 9.8551(3), c = 6.0295(2) Angstroms, beta = 103.432(3) degrees, V = 758.3(1) Angstroms(3), Z = 4 and a = 13.1187(5), b = 9.8552(3), c = 6.0293(2) Angstroms, beta = 103.410(3) degrees, V = 758.3(1) Angstroms(3), Z = 4, respectively. They are iso-structural to the mineral brochantite and consist of double chains of edge-sharing copper octahedra that are connected to one another by corners to form corrugated planes along bc; these planes are in-turn bridged by the unprecedented mu7-sulfate tetrahedra to give a 3D-structure. All the hydrogen atoms were precisely located from refinement of the neutron powder diffraction data of the deuterated sample. Magnetic susceptibility data reveal a low-dimensional behavior at high temperature and the presence of both ferromagnetic and antiferromagnetic super-exchanges resulting in a 3D long-range antiferromagnetic ordering at 7.5 K accompanied by a small canting of the moments. The transition is confirmed by a lambda-peak in the specific heat. The magnetic structure at 1.4 K shows the moments are oriented perpendicular to the corrugated planes with alternation along +/-a for neighboring chains within the double chains. The enhanced incoherent scattering at low-angle suggests the existence of short-range ferromagnetic clusters.
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Affiliation(s)
- Serge Vilminot
- Groupe des Matériaux Inorganiques, IPCMS, CNRS-ULP UMR-7504, Strasbourg, France.
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Pavani K, Ramanan A. Influence of 2-Aminopyridine on the Formation of Molybdates under Hydrothermal Conditions. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200500092] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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He Z, Gao EQ, Wang ZM, Yan CH, Kurmoo M. Coordination polymers based on inorganic lanthanide(II) sulfate skeletons and an organic isonicotinate N-oxide connector: segregation into three structural types by the lanthanide contraction effect. Inorg Chem 2005; 44:862-74. [PMID: 15859263 DOI: 10.1021/ic0487575] [Citation(s) in RCA: 163] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fourteen three-dimensional coordination polymers of general formula [Ln(lNO)(H2O)(SO4)]n, where Ln = La, 1.La; Ce, 2.Ce; Pr, 3.Pr; Nd, 4.Nd; Sm, 5.Sm; Eu, 6.Eu; Gd, 7.Gd; Tb, 8.Tb; Dy, 9.Dy; Ho, 10.Ho; Er. 11.Er; Tm, 12.Tm; Yb, 13.Yb; and Lu, 14.Lu; INO = isonicotinate-N-oxide, have been synthesized by hydrothermal reactions of Ln3+, MnCO3, MnSO4 x H2O, and isonicotinic acid N-oxide (HINO) at 155 degrees C and characterized by single-crystal X-ray diffraction, IR, thermal analysis, luminescence spectroscopy, and the magnetic measurement. The structures are formed by connection of layer, chain, or dimer of Ln-SO4 by the organic connector, INO. They belong to three structural types that are governed exclusively by the size of the ions: type I for the large ions, La, Ce, and Pr; type II for the medium ions, Nd, Sm, Eu, Gd, and Tb; and type III for the small ions, Dy, Ho, Er, Tm, Yb, and Lu. Type I consists of two-dimensional undulate Ln-sulfate layers pillared by INO to form a three-dimensional network. Type II has a 2-fold interpenetration of "3D herringbone" networks, in which the catenation is sustained by extensive pi-pi interactions and O-H...O and C-H...O hydrogen bonds. Type III comprises one-dimensional chains that are connected by INO bridges, resulting in an alpha-Po network. The progressive structural change is due to the metal coordination number decreasing from nine for the large ions via eight to seven for the small ions, demonstrating clearly the effect of lanthanide contraction. The sulfate ion acts as a micro4- or micro3-bridge, connecting two, three, or four metals, and is both mono- and bidentate. The INO ligand acts as a micro3- or micro2-bridge with carboxylate group in syn-syn bridging or bidentate chelating mode. The materials show considerably high thermal stability. The magnetic properties of 4.Nd, 6.Eu, 7.Gd, and 13.Yb and the luminescence properties of 6.Eu and 8.Tb are also investigated.
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Affiliation(s)
- Zheng He
- State Key Lab of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871,China
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Vilminot S, Richard-Plouet M, André G, Swierczynski D, Bourée-Vigneron F, Kurmoo M. Hydrothermal Synthesis in the System Ni(OH)2−NiSO4: Nuclear and Magnetic Structures and Magnetic Properties of Ni3(OH)2(SO4)2(H2O)2. Inorg Chem 2003; 42:6859-67. [PMID: 14552637 DOI: 10.1021/ic0345469] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present the synthesis, characterization by DT-TGA and IR, single crystal X-ray nuclear structure at 300 K, nuclear and magnetic structure from neutron powder diffraction on a deuterated sample at 1.4 K, and magnetic properties as a function of temperature and magnetic field of Ni(3)(OH)(2)(SO(4))(2)(H(2)O)(2). The structure is formed of chains, parallel to the c-axis, of edge-sharing Ni(1)O(6) octahedra, connected by the corners of Ni(2)O(6) octahedra to form corrugated sheets along the bc-plane. The sheets are connected to one another by the sulfate groups to form the 3D network. The magnetic properties measured by ac and dc magnetization, isothermal magnetization at 2 K, and heat capacity are characterized by a transition from a paramagnet (C = 3.954 emu K/mol and theta = -31 K) to a canted antiferromagnet at T(N) = 29 K with an estimated canting angle of 0.2-0.3 degrees. Deduced from powder neutron diffraction data, the magnetic structure is modeled by alternate pairs of Ni(1) within a chain having their moments pointing along [010] and [010], respectively. The moments of Ni(2) atoms are oppositely oriented with respect to their adjacent pairs. The resulting structure is that of a compensated arrangement of moments within one layer, comprising one ferromagnetic and three antiferromagnetic superexchange pathways between the nickel atoms.
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Affiliation(s)
- Serge Vilminot
- Groupe des Matériaux Inorganiques, IPCMS, UMR 7504, 23 Rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France.
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