Direct evidence of the orbital contribution to the magnetic moment in AA'FeReO6 double perovskites

C. J. Oates; C. Kapusta; C. Marquina; D. Rybicki; D. Zajac; J. M. De Teresa; M. Borowiec; M. R. Ibarra; M. Sikora; V. Prochazka

arxiv: cond-mat/0503358 · v1 · submitted 2005-03-15 · ❄️ cond-mat.str-el · cond-mat.mtrl-sci

Direct evidence of the orbital contribution to the magnetic moment in AA'FeReO6 double perovskites

M. Sikora , D. Zajac , C. Kapusta , M. Borowiec , C. J. Oates , V. Prochazka , D. Rybicki , J. M. De Teresa

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C. Marquina M. R. Ibarra

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classification ❄️ cond-mat.str-el cond-mat.mtrl-sci

keywords orbitalmagneticmomentca2fereo6compoundscontributiondoubleedges

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Spin and orbital magnetic moments of Re in AA'FeReO6 double perovskites (A,A' = Ba, Sr, Ca) have been directly probed employing XMCD spectroscopy at the Re L2,3-edges. A considerable orbital magnetic moment is observed in all the studied compounds despite octahedral coordination. Relative orbital to spin contribution per Re atom rises with lattice distortion from mL/mS = -0.28 to -0.34 for AA'=Ba2FeReO6 and Ca2FeReO6, respectively. A preliminary XMCD measurements at the Fe L2,3-edges reveals also a significant orbital moment of iron in Ca2FeReO6. The relation of the results to the magnetic properties of the compounds is discussed.

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Direct evidence of the orbital contribution to the magnetic moment in AA'FeReO6 double perovskites

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