Zobrazeno 1 - 10
of 2 026
pro vyhledávání: '"MEETSMA, A."'
Autor:
Shujah, Shaukat, Ali, Saqib, Khalid, Nasir, Muhammad, Niaz, Meetsma, Auke, Wadood, Abdul, Khan, Huma
Publikováno v:
In Polyhedron 15 March 2022 215
We have studied YMnO$_{3}$ by high-temperature synchrotron X-ray powder diffraction, and have carried out differential thermal analysis and dilatometry on a single crystal sample. These experiments show two phase transitions at about 1100K and 1350K,
Externí odkaz:
http://arxiv.org/abs/cond-mat/0601547
Autor:
Klimin, S., Fausti, D., Meetsma, A., Bezmaternykh, L. N., van Loosdrecht, P. H. M., Palstra, T. T. M.
Publikováno v:
Acta Cryst. B61, 481 (2005).
We report on a single-crystal X-ray structure study of $GdFe_{3}(BO_{3})_{4}$ at room temperature and at T=90 K. At room temperature $GdFe_{3}(BO_{3})_{4}$ crystallizes in a trigonal space group R32 (No. 155), the same as found for other members of i
Externí odkaz:
http://arxiv.org/abs/cond-mat/0502423
Autor:
Mattheus, Christine C., Baas, Jakob, Meetsma, Auke, de Boer, Jan L., Kloc, Christian, Siegrist, Theo, Palstra, Thomas T. M.
6,13-dihydropentacene and pentacene co-crystallise in a ratio of 2:1 during vapour transport of commercial pentacene in a gas flow. The crystal structure is monoclinic P2_1/n and contains one dihydropentacene molecule, and half a pentacene molecule i
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210227
Autor:
Mattheus, Christine C., Dros, Anne B., Baas, Jakob, Oostergetel, Gert T., Meetsma, Auke, de Boer, Jan L., Palstra, Thomas T. M.
Pentacene crystallizes in a layered structure with a herringbone arrangement within the layers. The electronic properties depend strongly on the stacking of the molecules within the layers (Haddon et al., 2002). We have synthesized four different pol
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210228
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:
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