Zobrazeno 1 - 10
of 771
pro vyhledávání: '"Mulders, A. M."'
Autor:
Princep, A. J., Mulders, A. M., Schierle, E., Weschke, E., Hester, J., Hutchison, W. D., Tanaka, Y., Terada, N., Narumi, Y., Nakamura, T.
Soft resonant x-ray Bragg diffraction (SRXD) at the Ho M$_{4,5}$ edges has been used to study Ho $4f$ multipoles in the combined magnetic and orbitally ordered phase of HoB$_2$C$_2$. A full description of the energy dependence for both $\sigma$ and $
Externí odkaz:
http://arxiv.org/abs/1112.0382
Publikováno v:
PRB 84 (2011) 140403(R)
Neutron diffraction measurements on multiferroic LuFe2O4 show changes in the antiferromagnetic (AFM) structure characterized by wavevector q = (1/3 1/3 1/2) as a function of electric field cooling procedures. The increase of intensity from all magnet
Externí odkaz:
http://arxiv.org/abs/1109.5762
Autor:
Princep, A. J., Mulders, A. M., Staub, U., Scagnoli, V., Nakamura, T., Kikkawa, A., Lovesey, S. W., Balcar, E.
Publikováno v:
2011 J. Phys.: Condens. Matter 23 266002
Resonant soft x-ray Bragg diffraction at the Dy M$_{4,5}$ edges has been used to study Dy multipoles in the combined magnetic and orbitally ordered phase of DyB$_2$C$_2$. The analysis incorporates both the intra-atomic magnetic and quadrupolar intera
Externí odkaz:
http://arxiv.org/abs/1104.2370
Autor:
García-Fernández, M., Staub, U., Bodenthin, Y., Pomjakushin, V., Mirone, A., Fernández-Rodríguez, J., Scagnoli, V., Mulders, A. M., Lawrence, S. M., Pomjakushina, E.
We present a systematic study of the electronic structure in A-site ordered manganites as function of doping and temperature. The energy dependencies observed with soft x-ray resonant diffraction (SXRD) at the Mn L_{2,3} edges are compared with struc
Externí odkaz:
http://arxiv.org/abs/1011.2334
Autor:
Mulders, A M, Lawrence, S M, Princep, A J, Staub, U, Bodenthin, Y, Garcia-Fernandez, M, Garganourakis, M, Hester, J, Macquart, R, Ling, C D
Publikováno v:
Phys. Rev. B 81, 092405 (2010)
Magnetic spiral structures can exhibit ferroelectric moments as recently demonstrated in various multiferroic materials. In such cases the helicity of the magnetic spiral is directly correlated with the direction of the ferroelectric moment and measu
Externí odkaz:
http://arxiv.org/abs/0907.3852
Autor:
Mulders, A. M., Lawrence, S. M., Staub, U., Garcia-Fernandez, M., Scagnoli, V., Mazzoli, C., Pomjakushina, E., Conder, K., Wang, Y.
Publikováno v:
PRL 103 (2009) 077602.
Geometrical frustration of the Fe ions in LuFe2O4 leads to intricate charge and magnetic order and a strong magnetoelectric coupling. Using resonant x-ray diffraction at the Fe K edge, the anomalous scattering factors of both Fe sites are deduced fro
Externí odkaz:
http://arxiv.org/abs/0812.3094
Akademický článek
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Autor:
Garcia-Fernandez, M., Scagnoli, V., Staub, U., Mulders, A. M., Janousch, M., Bodenthin, Y., Meister, D., Patterson, B. D., Mirone, A., Tanaka, Y., Nakamura, T., Grenier, S., Huang, Y., Conder, K.
We have performed non-resonant x-ray diffraction, resonant soft and hard x-ray magnetic diffraction, soft x-ray absorption and x-ray magnetic circular dichroism measurements to clarify the electronic and magnetic states of the Co3+ ions in GdBaCo2O5.
Externí odkaz:
http://arxiv.org/abs/0808.1681
Autor:
Garcia-Fernandez, M., Staub, U., Bodenthin, Y., Lawrence, S. M., Mulders, A. M., Buckley, C. E., Weyeneth, S., Pomjakushina, E., Conder, K.
Soft X-ray resonant powder diffraction has been performed at the Mn L2,3 edges of A-site ordered SmBaMn2O6. The energy and polarization dependence of the (1/2 1/2 0) reflection provide direct evidence for a (x2-z2)/(y2-z2) type orbital ordering in co
Externí odkaz:
http://arxiv.org/abs/0801.2235
Temperature dependences of a magnetic and an orbital Bragg reflection at the Mn L2 and L3 edges of La0.5Sr1.5MnO4 have been collected. The temperature evolution of the orbital reflection depend strongly on the x-ray energy and reflects the different
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603497