Theory and experiment of the ESR of Co$^{2+}$ in Zn$_2$ % (OH)PO$_4$ and Mg$_2$(OH)AsO$_4$

Bilbao; Brazil.) J.M. Rojo; Campinas; G.E. Barberis (Instituto de F\'isica ''Gleb Wataghin''; J.L. Mesa; L. Lezama; M.C dos Santos; M.E. Foglio; S\~ao Paulo; Spain)

arxiv: cond-mat/0110563 · v1 · submitted 2001-10-26 · ❄️ cond-mat.mtrl-sci

Theory and experiment of the ESR of Co²⁺ in Zn₂ % (OH)PO₄ and Mg₂(OH)AsO₄

M.E. Foglio , M.C dos Santos , G.E. Barberis (Instituto de F\'isica ''Gleb Wataghin'' , Unicamp , Campinas , S\~ao Paulo , Brazil.) J.M. Rojo , J.L. Mesa

show 5 more authors

L. Lezama T. Rojo (Departamento de Qu\'imica Inorg\'anica Universidad del Pa\'is Vasco Bilbao Spain)

This is my paper

classification ❄️ cond-mat.mtrl-sci

keywords resonancecomplexenvironmentspenta-coordinatedallowedassumingassumptioncalculated

0 comments

read the original abstract

Experiments of Electron Spin Resonance (ESR) were performed on Co$% ^{2+}$ substituting Zn$^{2+}$ or Mg$^{2+}$ in powder samples of Zn$_2$(OH)PO$_4$ and Mg$_2$(OH)AsO$_4$. The observed resonances are described with a theoretical model that considers the departures from the two perfect structures. It is shown that the resonance in the penta-coordinated complex is allowed, and the crystal fields that would describe the resonance of the Co$^{2+}$ in the two environments are calculated. The small intensity of the resonance in the penta-coordinated complex is explained assuming that this site is much less populated than the octahedral one; this assumption was verified by a molecular calculation of the energies of the two environments, with both Co and Zn as central ions in Zn$_2$(OH)PO$_4$.

This paper has not been read by Pith yet.

Theory and experiment of the ESR of Co²⁺ in Zn₂ % (OH)PO₄ and Mg₂(OH)AsO₄

discussion (0)