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 degrees 2) with unit cell parameters a = 5.71075(2) angstrom, b = 7.68266(3) angstrom, c = 7.96742(3) angstrom, alpha = 64.2972(2)degrees, beta = 88.4860(2)degrees and gamma = 70.5958(2)degrees 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. (c) 2006 Elsevier Inc. All rights reserved.

keywords

ANTIFERROMAGNETIC CHAIN; 1D; SYSTEMS

subject category

Chemistry

authors

dos Santos, AM; Brandao, P; Fitch, A; Reis, MS; Amaral, VS; Rocha, J

our authors

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".