DUTTINE, Mathieu; WATTIAUX, Alain; BALIMA, Félix; DECORSE, Claudia; MOUTAABBID, Hicham; RYAN, Dominic; BONVILLE, Pierre

doi:10.1063/1.5077005

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DUTTINE, Mathieu
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

WATTIAUX, Alain
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

BALIMA, Félix
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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AIP Advances. 2019, vol. 9, n° 3, p. 035008

American Institute of Physics- AIP Publishing LLC

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In the orthorhombic manganites o-RMnO$_3$, where R is a heavy rare earth (R = Gd-Yb), the Mn$^{3+}$ sublattice is known to undergo two magnetic transitions. The low temperature phase has an antiferromagnetic structure (collinear or elliptical), which has been well characterized by neutron diffraction in most of these compounds. The intermediate phase, occurring in a narrow temperature range (a few K), is documented for R = Gd-Ho as a collinear modulated structure, incommensurate with the lattice spacings. We report here on a $^{57}$Fe M\"ossbauer study of 2% $^{57}$Fe doped o-YbMnO$_3$, where the spin only Fe$^{3+}$ ion plays the role of a magnetic probe. From the analysis of the shape of the magnetic hyperfine M\"ossbauer spectra, we show that the magnetic structure of the intermediate phase in o-YbMnO$_3$ (38.0 K < T < 41.5 K) is also modulated and incommensurate.< Réduire

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Modulated magnetic structure in $^{57}$Fe doped orthorhombic YbMnO$_3$: a Mössbauer study

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