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  Ising-type Magnetic Anisotropy in CePd2As2

Ajeesh, M. O., Shang, T., Jiang, W. B., Xie, W., dos Reis, R. D., Smidman, M., et al. (2017). Ising-type Magnetic Anisotropy in CePd2As2. Scientific Reports, 7: 7338, pp. 1-6. doi:10.1038/s41598-017-07595-w.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-D793-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-D7B3-2
Genre: Journal Article

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 Creators:
Ajeesh, M. O.1, Author              
Shang, T.2, Author
Jiang, W. B.2, Author
Xie, W.2, Author
dos Reis, R. D.1, Author              
Smidman, M.2, Author
Geibel, C.3, Author              
Yuan, H. Q.2, Author
Nicklas, M.4, Author              
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2External Organizations, ou_persistent22              
3Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              
4Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863472              

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 Abstract: We investigated the anisotropic magnetic properties of CePd2As2 by magnetic, thermal and electrical transport studies. X-ray diffraction confirmed the tetragonal ThCr2Si2-type structure and the high-quality of the single crystals. Magnetisation and magnetic susceptibility data taken along the different crystallographic directions evidence a huge crystalline electric field (CEF) induced Ising-type magneto-crystalline anisotropy with a large c-axis moment and a small in-plane moment at low temperature. A detailed CEF analysis based on the magnetic susceptibility data indicates an almost pure vertical bar +/- 5/2 > CEF ground-state doublet with the dominantly vertical bar +/- 3/2 > and the vertical bar +/- 1/2 > doublets at 290 K and 330 K, respectively. At low temperature, we observe a uniaxial antiferromagnetic (AFM) transition at T-N = 14.7 K with the crystallographic c-direction being the magnetic easy-axis. The magnetic entropy gain up to T-N reaches almost R ln 2 indicating localised 4 f-electron magnetism without significant Kondo-type interactions. Below T-N, the application of a magnetic field along the c-axis induces a metamagnetic transition from the AFM to a field-polarised phase at mu H-0(c0) = 0.95T, exhibiting a textbook example of a spin-flip transition as anticipated for an Ising-type AFM.

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Language(s): eng - English
 Dates: 2017-08-042017-08-04
 Publication Status: Published in print
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 7 Sequence Number: 7338 Start / End Page: 1 - 6 Identifier: ISSN: 2045-2322
CoNE: /journals/resource/2045-2322