Magnetic anomalies in single crystalline ErPd2Si2

Sampathkumaran, E. V. ; Mohapatra, Niharika ; Iyer, Kartik K. ; Cao, C. D. ; Löser, W. ; Behr, G. (2008) Magnetic anomalies in single crystalline ErPd2Si2 Journal of Magnetism and Magnetic Materials, 320 (8). pp. 1549-1552. ISSN 0304-8853

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S03048...

Related URL: http://dx.doi.org/10.1016/j.jmmm.2008.01.010

Abstract

Considering certain interesting features in the previously reported 166Er Mössbauer effect, and neutron diffraction data on the polycrystalline form of ErPd2Si2 crystallizing in the ThCr2Si2-type tetragonal structure, we have carried out magnetic measurements (1.8-300 K) on the single crystalline form of this compound. We observe significant anisotropy in the absolute values of magnetization (indicating that the easy axis is c-axis) as well as in features due to magnetic ordering in the plot of magnetic susceptibility χ versus temperature T at low temperatures. The χ(T) data reveal that there is a pseudo-low-dimensional magnetic order setting in at 4.8 K, with a three-dimensional antiferromagnetic order setting in at a lower temperature (3.8 K). A new finding in the χ(T) data is that, for H// < 1 1 0 > but not for H// < 0 0 1 >, there is a broad shoulder in the range 8-20 K, indicative of the existence of magnetic correlations above 5 K as well, which could be related to the previously reported slow-relaxation-dominated Mössbauer spectra. Interestingly, the temperature coefficient of electrical resistivity is found to be isotropic; no feature due to magnetic ordering could be detected in the electrical resistivity data at low temperatures, which is attributed to magnetic Brillioun-zone boundary gap effects. The results reveal the complex nature of magnetism of this compound.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:ErPd2Si2; Magnetic Susceptibility
ID Code:47323
Deposited On:08 Jul 2011 13:03
Last Modified:08 Jul 2011 13:03

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