Pressure induced phase separation in optimally doped bilayer manganites

Malavasi, Lorenzo; Baldini, Maria; Zardo, Ilaria; Hanfland, Michael; Postorino, Paolo
February 2009
Applied Physics Letters;2/9/2009, Vol. 94 Issue 6, pN.PAG
Academic Journal
In this paper, we give a direct experimental evidence of the long hypothesized phase separation scenario in strongly correlated manganite-based systems. High resolution, high-pressure synchrotron x-ray diffraction measurements on La1.4Sr1.6Mn2O7 as a function of temperature reveal the instability with P of the ferromagnetic phase leading, above a threshold P, to a phase separation between two phases with different orbital occupancies.


Related Articles

  • Domain mapping of a Ca-doped manganite. Turner, Joshua J.; Jordan-Sweet, Jean L.; Upton, Mary; Hill, John P.; Tokura, Yoshinori; Tomioka, Yasuhide; Kevan, Stephen D. // Applied Physics Letters;3/31/2008, Vol. 92 Issue 13, p131907 

    We have performed microdiffraction experiments to map the crystallographic domain structure of the Ca-doped manganite Pr0.5Ca0.5MnO3 by microfocusing x-rays through a glass capillary. Domain structure on the order of a few microns is observed. We suggest that this finding implies that the...

  • Elastic strains around cracked cold-expanded fastener holes measured using the synchrotron X-ray diffraction technique. Stefanescu, D.; Steuwer, A.; Owen, R. A.; Nadri, B.; Edwards, L.; Fitzpatrick, M. E.; Withers, P. J. // Journal of Strain Analysis for Engineering Design (Professional ;Sep2004, Vol. 39 Issue 5, p459 

    In this work, the capability of the synchrotron X-ray diffraction technique to measure changes in the residual strains caused by fatigue crack growth from cold-expanded holes in an aluminium alloy plate has been investigated. The measurement technique was validated by comparing the synchrotron...

  • Time- and angle-resolved x-ray diffraction to probe structural and chemical evolution during Al-Ni intermetallic reactions. Yoo, Choong-Shik; Wei, Haoyan; Chen, Jing-Yin; Shen, Guoyin; Chow, Paul; Xiao, Yuming // Review of Scientific Instruments;Nov2011, Vol. 82 Issue 11, p113901 

    We present novel time- and angle-resolved x-ray diffraction (TARXD) capable of probing structural and chemical evolutions during rapidly propagating exothermic intermetallic reactions between Ni-Al multilayers. The system utilizes monochromatic synchrotron x-rays and a two-dimensional (2D) pixel...

  • Experimental estimation of the cooperative Jahn-Teller energy in orbitally ordered KCu0.8Mg0.2F3 perovskite. Scavini, M.; Brunelli, M.; Ferrero, C.; Mazzoli, C.; Ghigna, P. // European Physical Journal B -- Condensed Matter;Aug2008, Vol. 65 Issue 2, p187 

    High resolution synchrotron radiation X-ray powder diffraction was used to investigate the melting of the cooperative Jahn-Teller distortion (cJTd) in a perovskite of composition KCu0.8Mg0.2F3. A first order phase transition relaxing the cJTd is observed at T ∼ 600 K. From the transition...

  • Instrumentation and Experimental Developments for the Beamlines at the Synchrotron SOLEIL. Prigent, P.; Bac, S.; Blanchandin, S.; Cauchon, G.; David, G.; Fernandez Varela, P.; Kubsky, S.; Picca, F. // AIP Conference Proceedings;6/24/2010, Vol. 1234 Issue 1, p379 

    This paper presents an overview of the instrumentation and experiments developed for the beamlines at Synchrotron SOLEIL in France. Currently fourteen beamlines are opened to users out of the twenty six scheduled. About half of the beamlines cover the soft x-rays region using spectroscopy and...

  • High P-T phase transitions and P-V-T equation of state of hafnium. Hrubiak, Rostislav; Drozd, Vadym; Karbasi, Ali; Saxena, Surendra K. // Journal of Applied Physics;Jun2012, Vol. 111 Issue 11, p112612 

    We measured the volume of hafnium at several pressures up to 67 GPa and at temperatures between 300 to 780 K using a resistively heated diamond anvil cell with synchrotron x-ray diffraction at the Advanced Photon Source. The measured data allows us to determine the P-V-T equation of state of...

  • Investigation by Synchrotron X-ray Diffraction Topography of the Crystal Structure Defects in Colored Diamonds (Natural, Synthetic, and Treated). Yuan, Joe C. C.; Ming-sheng Peng; Yu-fei Meng // Gems & Gemology;2006, Vol. 42 Issue 3, p93 

    Diamonds are not only important for jewelry, but also have a variety of industrial applications. The presence of defects can often produce desirable properties in diamond. For example, plastic deformation may cause diamonds to appear pink or red. In addition to spectroscopic methods and...

  • Axiotaxy of CoSi2 thin films on Si(100) substrates and the effects of Ti alloying. Ahmet S. Ö, zcan; Ludwig Jr., Karl F.; Detavernier, Christophe; Lavoie, Christian; Jordan-Sweet, Jean L. // Journal of Applied Physics;6/15/2004, Vol. 95 Issue 12, p8376 

    The texture of CoSi2 films on Si(001) substrates has been examined using synchrotron based high-resolution pole figure analysis. We find that axiotaxy, a recently recognized type of texture which was observed in NiSi thin films on Si(001), is also occurring in CoSi2 layers. Typical of axiotaxy...

  • High-resolution x-ray topography and diffraction study of bulk regular domain structures in LiNbO3 crystals. Antipov, V. V.; Blistanov, A. A.; Roshchupkina, E. D.; Tucoulou, R.; Ortega, L.; Roshchupkin, D. V. // Applied Physics Letters;11/29/2004, Vol. 85 Issue 22, p5325 

    Bulk regular domain structures created in a LiNbO3 crystal by aftergrowth thermoelectrical treatment technique were studied by high-resolution x-ray diffraction and topography. Topographic contrast can be observed between neighboring domains and is related to the difference in the direction of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics