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|Type:||Artigo de periódico|
|Title:||ESR of Gd3+ in magnetically ordered Eu2CuO4|
|Abstract:||Electron spin resonance (ESR) experiments of Gd3+ in the antiferromagnetic (AF) ordered phase (T<T-N) of Eu2CuO4 can be interpreted in terms of four magnetically nonequivalent rare-earth sites with local internal fields H-i=+/-310(30) Oe along the  and  directions. The internal held is well described by a dipolar magnetic field of a noncollinear AF array of 0.35(4) mu(B) per Cu moment aligned along the  and  directions. This is consistent with recent results of magnetic-field-dependent neutron-diffraction experiments. From the ESR and magnetic susceptibility data, the crystal field parameters for Gd3+ and Eu3+ in Eu2CuO4 are determined. The exchange parameters between the rare earths are also estimated.|
|Editor:||American Physical Soc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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