LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Liu, J; Cui, X-Y; Georgiev, P A; Morrison, I; Ross, DK; Roberts, M; Anderson, KA; Telling, M; Fort, D
Publisher: American Physical Society
Languages: English
Types: Article
Subjects: energy
The crystalline and magnetic structures of the YCo3\ud -H(D) system have been investigated by means of x-ray\ud and neutron diffraction with the objective of understanding the complex magnetic changes that are observed in\ud this system as hydrogen is added. Synchrotron x-ray diffraction (XRD) patterns were first refined to yield the\ud lattice parameters and coordination of Y and Co atoms in the metal and two B-hydride phases while XRD was\ud used for the y phase. In situ neutron powder diffraction measurements of YCo3Dx were then made in all four\ud phases to determine the deuterium site occupancies and magnetic structures. The site occupancies were also\ud rationalized using the Westlake geometric model. The highest hydrogen concentration measured was\ud YCo3H4.6\ud . Using the Westlake model, we conclude that the saturated hydrogen content would be YCo3H5\ud . Our\ud results reported here and in Part I (Phys. Rev. B 76, 184443 (2007)) have enabled us to rationalize the changes\ud in the magnetic structures in terms of changes in the cobalt-cobalt distance caused by the addition of hydrogen.\ud In particular, in the antiferromagnetic y phase, we observe Co atomic displacements that enable the structure\ud to adopt a particular antiferromagnetic structure in a manner that is reminiscent of a Peierls distortion as\ud observed in transitions from the conducting to nonconducting hydrides on addition of hydrogen in YH3.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • 1 M. Yamaguchi, H. Ikeda, T. Ohta, T. Katayama, and T. Goto, J. Less-Common Met. 106, 165 1985 .
    • 2 X. Y. Cui, J. Liu, I. Morrison, and D. K. Ross, J. Alloys Compd. 404-406, 136 2005 .
    • 3 M. Yamaguchi, D. K. Ross, T. Goto, and T. Ohta, Z. Phys. Chem., Neue Folge 145, 355 1985 .
    • 4 M. Yamaguchi, I. Yamamoto, Y. Fugita, and T. Goto, Z. Phys. Chem., Neue Folge 163, 677 1989 .
    • 5 M. I. Bartashevich, H. A. Katori, T. Goto, I. Yamamoto, and M. Yamaguchi, Physica B 201, 135 1994 .
    • 6 M. J. Benham, S. M. Bennington, D. K. Ross, D. Noreus, and M. Yamaguchi, Z. Phys. Chem., Neue Folge 163, 283 1989 .
    • 7 V. V. Burnasheva, V. A. Yartys, S. P. Solov'ev, N. V. Fadeeva, and K. N. Semenenko, Sov. Phys. Crystallogr. 274, 409 1982 .
    • 8 M. I. Bartashevich, A. N. Pirogov, V. I. Voronin, T. Goto, M. Yamaguchi, and I. Yamagoto, J. Alloys Compd. 231, 104 1995 .
    • 9 J. Liu, D. P. Broom, P. A. L. Georgiev, and D. K. Ross, J. Alloys Compd. 356-357, 174 2003 .
    • 10 D. G. Westlake, J. Less-Common Met. 75, 177 1980 .
    • 11 D. G. Westlake, J. Less-Common Met. 90, 251 1983 .
    • 12 X. Y. Cui, J. Liu, P. A. Georgiev, I. Morrison, D. K. Ross, M. Roberts, K. A. Andersen, M. Telling, and D. Fort, preceding paper, Phys. Rev. B 76, 184443 2007 .
    • 13 A. C. Larson and R. B. Von Dreele, Los Alamos National Laboratory Report No. LAUR 86-748, 2000 unpublished .
    • 14 B. H. Toby, J. Appl. Crystallogr. 34, 210 2001 .
    • 15 J. C. Slater, J. Chem. Phys. 41, 3199 1964 .
    • 16 D. G. Westlake, J. Less-Common Met. 91, 275 1983 .
    • 17 E. Wicke and H. Brodowsky, Hydrogen in Metals II, Topics in Applied Physics Vol. 78 Springer, Berlin, 1978 .
    • 18 Y. E. Filinchuk and K. Yvon, J. Solid State Chem. 179, 1041 2006 .
    • 19 V. F. Sears, Neutron News 3 3 , 26 1992 .
    • 20 L. Néel, Le Magnetisme 2, 79 1940 Centre National de la Research Scientifique de France, Paris .
    • 21 B. I. Bleaney and B. Bleaney, Electricity and Magnetism, 1st ed. Oxford University Press, New York, 1955 , p. 601.
    • 22 Y. Mokrousov, G. Bihlmayer, S. Blugel, and S. Heinze, Phys. Rev. B 75, 104413 2007 .
    • 23 V. K. Fedotov, V. E. Antonov, I. O. Bashkin, T. Hansen, and I. Natkaniec, J. Phys.: Condens. Matter 18, 1593 2006 .
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article