Issue 1, 2016
From the journal:

Journal of Materials Chemistry C

Tubular structures from the LnS–TaS2 (Ln = La, Ce, Nd, Ho, Er) and LaSe–TaSe2 misfit layered compounds†

Gal Radovsky,a   Ronit Popovitz-Biro,b   Tommy Lorenz,c   Jan-Ole Joswig,c   Gotthard Seifert,c   Lothar Houben,d   Rafal E. Dunin-Borkowskid  and  Reshef Tenne*a  

* Corresponding authors

a Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel
E-mail: Reshef.Tenne@weizmann.ac.il
Fax: +972-8-934-4138
Tel: +972-8-934-2394

b Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel

c Physikalische Chemie, Technische Universität Dresden, Bergstr. 66b, D-01069 Dresden, Germany

d Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, D-52425 Jülich, Germany

Abstract

Nanotubular structures from a new family of misfit compounds LnS–TaS2 with (Ln = La, Ce, Nd, Ho, Er) and LaSe–TaSe2 (some of them not known hitherto) are reported. Stress relaxation originating from the lattice mismatch between the alternating LnS(Se) and TaS2(Se) layers, combined with seaming of the dangling bonds in the rim, leads to the formation of a variety of nanotubular structures. Their structures are studied via scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), scanning transmission electron microscopy (STEM) and selected area electron diffraction (SAED). Tubules exhibiting a single folding vector for the LnS(Se) as well as TaS2(Se) layers were often found. The small values of the c-axis periodicities are indicative of a strong interaction between the two constituent layers which was also supported by Raman spectroscopy and theoretical calculations.

Graphical abstract: Tubular structures from the LnS–TaS2 (Ln = La, Ce, Nd, Ho, Er) and LaSe–TaSe2 misfit layered compounds

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Article information

DOI
https://doi.org/10.1039/C5TC02983J
Article type
Paper
Submitted
18 Sep 2015
Accepted
22 Oct 2015
First published
23 Oct 2015

J. Mater. Chem. C, 2016,4, 89-98

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Tubular structures from the LnS–TaS2 (Ln = La, Ce, Nd, Ho, Er) and LaSe–TaSe2 misfit layered compounds

G. Radovsky, R. Popovitz-Biro, T. Lorenz, J. Joswig, G. Seifert, L. Houben, R. E. Dunin-Borkowski and R. Tenne, J. Mater. Chem. C, 2016, 4, 89 DOI: 10.1039/C5TC02983J

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