Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Van Aken, Bas B."'
Publikováno v:
EPJ Photovoltaics, Vol 14, p 32 (2023)
The business case of novel integrated applications of solar energy is often regarded as a straightforward extrapolation of standard solar parks. But when the design of the solar park is remarkably different from typical solar parks, the operating con
Externí odkaz:
https://doaj.org/article/2310be5b12a342aba333a6b463043df1
Publikováno v:
In Energy 15 October 2018 161:266-276
Publikováno v:
J. Appl. Phys. 97, 063904 (2005)
The magnetic ground state of antiferromagnetically coupled Gd/Fe multilayers and the evolution of in-plane domain walls is modelled with micromagnetics. The twisted state is characterised by a rapid decrease of the interface angle with increasing mag
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411615
Publikováno v:
Phys. Rev. B 69, 134113 (2004)
We have studied the influence of antiferromagnetic ordering on the local dielectric moments of the MnO_5 and LuO_7 polyhedra by measuring neutron powder diffraction patterns of LuMnO_3 at temperatures near T_N. We show that the coupling is weak, beca
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402465
Publikováno v:
Phys. Rev. B66, 224414 (2002)
We present a temperature dependent single crystal x-ray diffraction study of twinned orthorhombic perovskites La1-xCaxMnO3, for x=0.16 and x=0.25. These data show the evolution of the crystal structure from the ferromagnetic insulating state to the f
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206181
Publikováno v:
Phys. Rev. Lett. 90, 066403 (2003)
We present evidence that the insulator to metal transition in (La,Ca)MnO3 near x~0.2 is driven by the suppression of coherent Jahn-Teller distortions, originating from d type orbital ordering. The orbital ordered state is characterised by large long-
Externí odkaz:
http://arxiv.org/abs/cond-mat/0204103
Publikováno v:
Chem. Mater. (2001), 13, 4804-4807
We show that the transition in AMnO3 from the orthorhombic perovskite phase to the hexagonal phase is promoted by inducing disorder on the A-site. The gap between the orthorhombic and the hexagonal phase is widened for disordered, mixed yttrium-gadol
Externí odkaz:
http://arxiv.org/abs/cond-mat/0106335
Publikováno v:
B.B. Van Aken, A. Meetsma, and T.T.M. Palstra, Acta Cryst. C57, 230 (2001); B.B. Van Aken, A. Meetsma, and T.T.M. Palstra, Acta Cryst. E57, i38 (2001)
We refined the crystal structure of AMnO3, with A = Y, Er, Yb and Lu by single crystal x-ray diffraction. Our results show some distinct differences with previous reports on LuMnO3 and YbMnO3. We show that the ferroelectric behaviour is originated in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0106298
We observe two consecutive transitions in La1-xCaxMnO3, x=0.19: ferromagnetic ordering at Tc = 177 K and Jahn-Teller orbital ordering at T_JT = 150 K. The presence of a ferromagnetic insulating state below T_JT shows that the metallic phase is bound
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105197
We present a detailed single crystal x-ray diffraction study of twinned orthorhombic perovskites. The diffraction pattern can be indexed on a $2a_p$x$2a_p$x$2a_p$ lattice, but does not obey cubic symmetry relations. The data can be modelled in space
Externí odkaz:
http://arxiv.org/abs/cond-mat/0103628