Searched for: author:"Qian, F."
(1 - 8 of 8)
document
Qian, F. (author), Bannenberg, L.J. (author), Wilhelm, Heribert (author), Chaboussant, Grégory (author), Debeer-Schmitt, Lisa M. (author), Schmidt, Marcus P. (author), Aqeel, Aisha (author), Palstra, Thomas T.M. (author), Brück, E.H. (author), Lefering, A.J.E. (author), Pappas, C. (author), Mostovoy, Maxim (author), Leonov, Andrey O. (author)
The lack of inversion symmetry in the crystal lattice of magnetic materials gives rise to complex noncollinear spin orders through interactions of a relativistic nature, resulting in interesting physical phenomena, such as emergent electromagnetism. Studies of cubic chiral magnets revealed a universal magnetic phase diagram composed of...
journal article 2018
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Bannenberg, L.J. (author), Qian, F. (author), Dalgliesh, R. M. (author), Martin, N (author), Chaboussant, G. (author), Schmidt, M (author), Schlagel, D. L. (author), Lograsso, T. A. (author), Wilhelm, H (author), Pappas, C. (author)
Magnetic skyrmions are nanosized topologically protected spin textures with particlelike properties. They can form lattices perpendicular to the magnetic field, and the orientation of these skyrmion lattices with respect to the crystallographic lattice is governed by spin-orbit coupling. By performing small-angle neutron scattering measurements,...
journal article 2017
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Qian, F. (author)
The research presented in this thesis focuses on chiral magnets, where skyrmion lattices are stablised by magnetic fields. Neutron scattering, magnetisation and magnetic susceptibility measurements have been performed on several typical chiral magnets such as the multiferroic insulator Cu2OSeO3 and the metallic MnSi and FeGe...
doctoral thesis 2017
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Bannenberg, L.J. (author), Kakurai, K. (author), Falus, P. (author), Lelievre-Berna, E. (author), Dalgliesh, R. (author), Dewhurst, C.D. (author), Qian, F. (author), Onose, Y. (author), Endoh, Y. (author), Tokura, Y. (author), Pappas, C. (author)
We present a comprehensive Small Angle Neutron Scattering (SANS) and Neutron Spin Echo Spectroscopy (NSE) study of the structural and dynamical aspects of the helimagnetic transition in Fe<sub>1-x</sub>Co<sub>x</sub>Si with x = 0.30. In contrast to the sharp transition observed in the archetype chiral magnet MnSi, the transition in Fe<sub>1-x<...
journal article 2017
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Pappas, C. (author), Bannenberg, L.J. (author), Lelièvre-Berna, E. (author), Qian, F. (author), Dewhurst, C. D. (author), Dalgliesh, R. M. (author), Schlagel, D. L. (author), Lograsso, T. A. (author), Falus, P (author)
The reference chiral helimagnet MnSi is the first system where Skyrmion lattice correlations have been reported. At a zero magnetic field the transition at TC to the helimagnetic state is of first order. Above TC, in a region dominated by precursor phenomena, neutron scattering shows the buildup of strong chiral fluctuating correlations over...
journal article 2017
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Bannenberg, L.J. (author), Kakurai, K. (author), Qian, F. (author), Lelièvre-Berna, E. (author), Dewhurst, C. D. (author), Onose, Y. (author), Endoh, Y. (author), Tokura, Y (author), Pappas, C. (author)
Small angle neutron scattering measurements on a bulk single crystal of the doped chiral magnet Fe1-xCoxSi with x=0.3 reveal a pronounced effect of the magnetic history and cooling rates on the magnetic phase diagram. The extracted phase diagrams are qualitatively different for zero and field cooling and reveal a metastable skyrmion lattice...
journal article 2016
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Miao, X.F. (author), Caron, L. (author), Cedervall, J. (author), Gubbens, P.C.M. (author), Dalmas De Réotier, P. (author), Yaouanc, A. (author), Qian, F. (author), Wildes, A. R. (author), Luetkens, H. (author), Amato, A. (author), van Dijk, N.H. (author), Brück, E.H. (author)
The spatial and temporal correlations of magnetic moments in the paramagnetic regime of (Mn,Fe)2(P,Si) have been investigated by means of polarized neutron diffraction and muon-spin relaxation techniques. Short-range magnetic correlations are present at temperatures far above the ferromagnetic transition temperature (TC). This leads to...
journal article 2016
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Qian, F. (author), Wilhelm, H. (author), Aqeel, A. (author), Palstra, T.T.M. (author), Lefering, A.J.E. (author), Brück, E.H. (author), Pappas, C. (author)
We present an investigation of the magnetic-field-temperature phase diagram of Cu2OSeO3 based on dc magnetization and ac susceptibility measurements covering a broad frequency range of four orders of magnitude, from very low frequencies reaching 0.1 Hz up to 1 kHz. The experiments were performed in the vicinity of Tc=58.2 K and around the...
journal article 2016
Searched for: author:"Qian, F."
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