2024-03-28T13:47:05Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1297012020-06-01T06:34:41Zcom_10261_31com_10261_3col_10261_284
2016-03-03T12:01:50Z
urn:hdl:10261/129701
Crystal structure and magnetism of Co(HPO3)⋅H2O: A novel layered compound of Co(II)
Gómez-Romero, P.
Sapiña, F.
Beltrán-Porter, Daniel
Navarro, Rafael
Rillo, Conrado
Lera, F.
Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Ministerio de Educación y Ciencia (España)
Under the terms of the Creative Commons Attribution (CC BY) license to their work.-- et al.
The crystal structure and magnetic properties of Co(HPO3)⋅H2O have been determined. The solid crystallizes in space group P c a21, a=8.984(2) Å, b=7.918(2) Å, c=10.139(8) Å, V=721.2 Å3. Z=4 d calc =2.89 g/cm3. The structure consists of layers only connected by hydrogen bonds. These layers can be viewed as formed by zigzag chains of edge‐sharing Co(II)O6 octahedra interconnected by a three atom bridge (O‐P‐O) and a single oxygen bridge. ac magnetic susceptibility measurements show a sharp peak at T c =(10.8±0.1) K, and are consistent with a transition from one‐ to two‐dimensional magnetic order, in agreement with the structure. An analysis of the χT/C vs ε=(1−T c /T) data in the critical region, for T>T c , using a double‐logarithmic plot, yields a critical exponent γ=1.75 for 0.01<ε<0.1, which correspond to a two‐dimensional Ising model.
2016-03-03T12:01:50Z
2016-03-03T12:01:50Z
1990
2016-03-03T12:01:50Z
artículo
Journal of Applied Physics 67(9): 5998-6000 (1990)
http://hdl.handle.net/10261/129701
10.1063/1.346042
http://dx.doi.org/10.13039/501100007273
eng
Publisher's version
http://dx.doi.org/10.1063/1.346042
Sí
http://creativecommons.org/licenses/by/4.0/
openAccess
American Institute of Physics