Abstract.
We have studied the magnetic structure of the orthorhombic compound Ho2Ni2Pb by means of neutron diffraction in zero field and in magnetic fields up to 4.5 T. Both powder and single-crystalline samples were used. Previous bulk measurements suggest two distinct magnetic phase transitions: one at TN = 7.0 K and the other at 4.8 K. Our neutron diffraction measurements, which were made in the range 1.5-20 K, showed that Ho2Ni2Pb has a collinear magnetic structure with unequal number of up and down Ho moments that are aligned parallel and antiparallel to the c axis. At the lowest temperatures the Ho moments are equal in size, each 8.3 μB in agreement with magnetization data. The magnetic structure can be described as having a 5a ×b ×c magnetic unit cell. Below Ts = 3.0 K the structure is squared up. A smooth development of all the magnetic moment magnitudes indicates that the magnetic structure remains in principle the same over the whole temperature range, the “phase transition” around 4.8 K can be identified as an inflection point in the temperature dependence of one of the Ho moments. With increasing temperature there is a clear development towards a simple transverse sine-wave modulated magnetic structure that is established just below TN.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Handbook of Magnetic Materials, Vols. 1–13, edited by K.H.J. Buschow (Elsevier North Holland, Amsterdam, (1980-2001)
L.D. Gulay, Y.M. Kalychak, M. Wolcyrz, J. Alloys Compd. 311, 228 (2000)
L.D. Gulay, K. Hiebl, J. Alloys Compd. 351, 35 (2003)
A.D. Chinchure, E. Muñoz-Sandoval, J.A. Mydosh, Phys. Rev. B 66, 020409(R) (2002)
J.L. Daams et al., Atlas of Crystal Structure Types for Intermetallic Phases (ASM International, 1991)
A.D. Chinchure, E. Muñoz-Sandoval, J.A. Mydosh, Phys. Rev. B 64, 020404(R) (2001)
E. Muñoz-Sandoval, A.D. Chinchure, R.W.A. Hendrikx, J.A. Mydosh, Europhys. Lett. 56, 302 (2001)
A.D. Chinchure, E. Muñoz-Sandoval, T.J. Gortenmulder, R.W.A. Hendrikx, J.A. Mydosh, J. Alloys Compd. 359, 5 (2003)
K. Prokeš, E. Muñoz-Sandoval, A.D. Chinchure, J.A. Mydosh, Phys. Rev. B 68, 134427 (2003)
H.M. Rietveld, J. Appl. Cryst. 2, 65 (1969)
T. Roisnel, J. Rodriguez-Charvajal, WinPLOTR (May 2003) computer code, unpublished
V.F. Sears, Neutron News 3, 26 (1992)
L.D. Gulay, K. Hiebl, J. Alloys Compd. 339, 46 (2002)
E. Muñoz-Sandoval, A. Díaz-Ortiz, A.D. Chinchure, J.A. Mydosh, J. Alloys Compd. 369, 260 (2004)
J. Rossat-Mignod, in Neutron Physics, Vol. 23C, edited by K. Skold, D.L. Price (Academic Press, 1987), p. 69
E.F. Bertaut, Acta Crystallogr. A 24, 217 (1968)
S. Daniš, K. Prokeš, E. Muñoz-Sandoval, A.D. Chinchure, J.A. Mydosh (2003), unpublished
W. Suski, in Handbook on the Physics and Chemistry of Rare Earths, Vol. 22, Chap. 146, edited by K.A. Gschneidner Jr., L. Eyring (Elsevier Science, Amsterdam, 1996), p. 143
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Prokeš, K., Muñoz Sandoval, E., Chinchure, A. et al. Uncompensated antiferromagnetic structure of Ho2Ni2Pb. Eur. Phys. J. B 43, 163–174 (2005). https://doi.org/10.1140/epjb/e2005-00039-1
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epjb/e2005-00039-1