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Type: Artigo de periódico
Title: ESR of Gd3+ in magnetically ordered Eu2CuO4
Author: Rettori, C
Oseroff, SB
Rao, D
Valdivia, JA
Barberis, GE
Martins, GB
Sarrao, J
Fisk, Z
Tovar, M
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 [100] and [010] 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 [100] and [010] 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.
Country: EUA
Editor: American Physical Soc
Citation: Physical Review B. American Physical Soc, v. 54, n. 2, n. 1123, n. 1127, 1996.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.54.1123
Date Issue: 1996
Appears in Collections:Unicamp - Artigos e Outros Documentos

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