Synthesis, crystal structure and magnetic characterization of Na2Cu5(Si2O7)2: An inorganic ferrimagnetic chain

António Moreira dos Santos; Paula Brandão; Andrew Fitch; Mário S. Reis; Vítor S. Amaral; João Rocha

doi:10.1016/j.jssc.2006.09.012

Synthesis, crystal structure and magnetic characterization of Na₂Cu₅(Si₂O₇)₂: An inorganic ferrimagnetic chain

António Moreira dos Santos, Paula Brandão, Andrew Fitch, Mário S. Reis, Vítor S. Amaral, João Rocha

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The hydrothermal synthesis, crystal structure and magnetic properties of the new copper silicate Na₂Cu₅(Si₂O₇)₂, are reported. The crystal structure was determined through synchrotron powder diffraction data. The unit cell was indexed to a triclinic cell, space group P-1 (n° 2) with unit cell parameters a=5.71075(2) Å, b=7.68266(3) Å, c=7.96742(3) Å, α=64.2972(2)°, β=88.4860(2)° and γ=70.5958(2)° with Z = 1. A structural model was obtained through a combination of a direct-space Monte-Carlo approach and Rietveld refinement. The crystal structure contains parallel chains consisting of zig-zag copper dimers and trimers. All silicon atoms are present as part of a [Si₂O₇]^6- anion that connects the chains; therefore the compound belongs to the sorosilicate mineral family. The magnetic susceptibility was measured and shows a behavior typical of one-dimensional ferrimagnetism, in agreement with the observed structure.

Original language	English
Pages (from-to)	16-21
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	180
Issue number	1
DOIs	https://doi.org/10.1016/j.jssc.2006.09.012
State	Published - Jan 2007
Externally published	Yes

Funding

António Moreira dos Santos and M. S. Reis wish to acknowledge FCT Grants BPD/14984/2004 and BPD/23184/2005 respectively. Work in Aveiro was performed under Project POCT/CTM/46780/02. The authors thank IFIMUP at the University of Porto for the SQUID measurements.

Funders	Funder number
Fundação para a Ciência e a Tecnologia	BPD/14984/2004, BPD/23184/2005

Keywords

Copper silicate
Magnetic chain
Structure determination from powder diffraction

Access to Document

10.1016/j.jssc.2006.09.012

Cite this

@article{04928fe41eac4c36bba517432e3c864a,

title = "Synthesis, crystal structure and magnetic characterization of Na2Cu5(Si2O7)2: An inorganic ferrimagnetic chain",

abstract = "The hydrothermal synthesis, crystal structure and magnetic properties of the new copper silicate Na2Cu5(Si2O7)2, are reported. The crystal structure was determined through synchrotron powder diffraction data. The unit cell was indexed to a triclinic cell, space group P-1 (n° 2) with unit cell parameters a=5.71075(2) {\AA}, b=7.68266(3) {\AA}, c=7.96742(3) {\AA}, α=64.2972(2)°, β=88.4860(2)° and γ=70.5958(2)° with Z = 1. A structural model was obtained through a combination of a direct-space Monte-Carlo approach and Rietveld refinement. The crystal structure contains parallel chains consisting of zig-zag copper dimers and trimers. All silicon atoms are present as part of a [Si2O7]6- anion that connects the chains; therefore the compound belongs to the sorosilicate mineral family. The magnetic susceptibility was measured and shows a behavior typical of one-dimensional ferrimagnetism, in agreement with the observed structure.",

keywords = "Copper silicate, Magnetic chain, Structure determination from powder diffraction",

author = "{dos Santos}, {Ant{\'o}nio Moreira} and Paula Brand{\~a}o and Andrew Fitch and Reis, {M{\'a}rio S.} and Amaral, {V{\'i}tor S.} and Jo{\~a}o Rocha",

year = "2007",

month = jan,

doi = "10.1016/j.jssc.2006.09.012",

language = "English",

volume = "180",

pages = "16--21",

journal = "Journal of Solid State Chemistry",

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T1 - Synthesis, crystal structure and magnetic characterization of Na2Cu5(Si2O7)2

T2 - An inorganic ferrimagnetic chain

AU - dos Santos, António Moreira

AU - Brandão, Paula

AU - Fitch, Andrew

AU - Reis, Mário S.

AU - Amaral, Vítor S.

AU - Rocha, João

PY - 2007/1

Y1 - 2007/1

N2 - The hydrothermal synthesis, crystal structure and magnetic properties of the new copper silicate Na2Cu5(Si2O7)2, are reported. The crystal structure was determined through synchrotron powder diffraction data. The unit cell was indexed to a triclinic cell, space group P-1 (n° 2) with unit cell parameters a=5.71075(2) Å, b=7.68266(3) Å, c=7.96742(3) Å, α=64.2972(2)°, β=88.4860(2)° and γ=70.5958(2)° with Z = 1. A structural model was obtained through a combination of a direct-space Monte-Carlo approach and Rietveld refinement. The crystal structure contains parallel chains consisting of zig-zag copper dimers and trimers. All silicon atoms are present as part of a [Si2O7]6- anion that connects the chains; therefore the compound belongs to the sorosilicate mineral family. The magnetic susceptibility was measured and shows a behavior typical of one-dimensional ferrimagnetism, in agreement with the observed structure.

AB - The hydrothermal synthesis, crystal structure and magnetic properties of the new copper silicate Na2Cu5(Si2O7)2, are reported. The crystal structure was determined through synchrotron powder diffraction data. The unit cell was indexed to a triclinic cell, space group P-1 (n° 2) with unit cell parameters a=5.71075(2) Å, b=7.68266(3) Å, c=7.96742(3) Å, α=64.2972(2)°, β=88.4860(2)° and γ=70.5958(2)° with Z = 1. A structural model was obtained through a combination of a direct-space Monte-Carlo approach and Rietveld refinement. The crystal structure contains parallel chains consisting of zig-zag copper dimers and trimers. All silicon atoms are present as part of a [Si2O7]6- anion that connects the chains; therefore the compound belongs to the sorosilicate mineral family. The magnetic susceptibility was measured and shows a behavior typical of one-dimensional ferrimagnetism, in agreement with the observed structure.

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