Bera, A. K. ; Yusuf, S. M. ; Banerjee, S. (2013) Short-range magnetic ordering in the geometrically frustrated layered compound YBaCo4O7 with an extended Kagomé structure Solid State Sciences, 16 . pp. 57-64. ISSN 1293-2558
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.solidstatesciences.2012.10.028
Abstract
Structural and magnetic properties of the geometrically frustrated layered compound YBaCo4O7 have been studied by magnetization and neutron diffraction. A layered type crystal structure, with alternating tetrahedral layers of Kagomé and triangular types, along the c axis (hexagonal symmetry, space group P63mc) has been found. The oxygen content of the present compound was determined by iodometric titration to be 7.00 ± 0.01. Presence of a short-range antiferromagnetic ordering (below TN ∼ 110 K) has been concluded from the appearance of an addition broad magnetic peak (at Q ∼ 1.35 Å−1) in the neutron diffraction pattern. A staggered chiral type (√3×√3) spin structure in the Kagomé layers has been found. Presence of a significant magneto-structural coupling is concluded from the changes in lattice parameters across the magnetic ordering temperature TN ∼ 110 K.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Geometrical Spin Frustration; Short-Range Spin–spin Correlation; YBaCo4O7; Kagomé Lattice; Neutron Diffraction |
| ID Code: | 112164 |
| Deposited On: | 01 Dec 2017 12:07 |
| Last Modified: | 01 Dec 2017 12:07 |
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