Investigation of the physical properties of the tetragonal CeMAl4Si2 (M = Rh, Ir, Pt) compounds

Ghimire, N. J.; Ronning, F.; Williams, D. J.; Scott, B. L.; Luo, Yongkang; Thompson, J. D.; Bauer, E. D.

doi:10.1088/0953-8984/27/2/025601

Title: Investigation of the physical properties of the tetragonal CeMAl₄Si₂ (M = Rh, Ir, Pt) compounds

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Abstract

The synthesis, crystal structure and physical properties studied by means of x-ray diffraction, magnetic, thermal and transport measurements of CeMAl₄Si₂ (M = Rh, Ir, Pt) are reported, along with the electronic structure calculations for LaMAl₄Si₂ (M = Rh, Ir, Pt). These materials adopt a tetragonal crystal structure (space group P4/mmm) comprised of BaAl₄ blocks, separated by MAl₂ units, stacked along the c-axis. Both CeRhAl₄Si₂ and CeIrAl₄Si₂ order antiferromagnetically below T_N1 = 14 and 16 K, respectively, and undergo a second antiferromagnetic transitition at lower temperature (T_N2 = 9 and 14 K, respectively). CePtAl₄Si₂ orders ferromagnetically below T_C = 3 K with an ordered moment of μ_sat = 0.8 μ_B for a magnetic field applied perpendicular to the c-axis. Electronic structure calculations reveal quasi-2D character of the Fermi surface.

Authors:

Ghimire, N. J. ^[1]; Ronning, F. ^[1]; Williams, D. J. ^[1]; Scott, B. L. ^[1]; Luo, Yongkang ^[1]; Thompson, J. D. ^[1]; Bauer, E. D. ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Publication Date:: Mon Dec 15 00:00:00 EST 2014

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1233168

Report Number(s):: LA-UR-14-28005
Journal ID: ISSN 0953-8984

Grant/Contract Number:: AC52-06NA25396

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physics. Condensed Matter

Additional Journal Information:: Journal Volume: 27; Journal Issue: 2; Journal ID: ISSN 0953-8984

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Ce-based intermetallic compounds; heavy-fermions; electronic-anisotrophy

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                    Ghimire, N. J., Ronning, F., Williams, D. J., Scott, B. L., Luo, Yongkang, Thompson, J. D., and Bauer, E. D. Investigation of the physical properties of the tetragonal CeMAl4Si2 (M = Rh, Ir, Pt) compounds.  United States: N. p., 2014. 
Web.  doi:10.1088/0953-8984/27/2/025601.

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                    Ghimire, N. J., Ronning, F., Williams, D. J., Scott, B. L., Luo, Yongkang, Thompson, J. D., & Bauer, E. D. Investigation of the physical properties of the tetragonal CeMAl4Si2 (M = Rh, Ir, Pt) compounds.  United States.  https://doi.org/10.1088/0953-8984/27/2/025601

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                    Ghimire, N. J., Ronning, F., Williams, D. J., Scott, B. L., Luo, Yongkang, Thompson, J. D., and Bauer, E. D. Mon .  
"Investigation of the physical properties of the tetragonal CeMAl4Si2 (M = Rh, Ir, Pt) compounds".  United States.  https://doi.org/10.1088/0953-8984/27/2/025601.  https://www.osti.gov/servlets/purl/1233168.

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@article{osti_1233168,

  title        = {Investigation of the physical properties of the tetragonal CeMAl4Si2 (M = Rh, Ir, Pt) compounds},

  author       = {Ghimire, N. J. and Ronning, F. and Williams, D. J. and Scott, B. L. and Luo, Yongkang and Thompson, J. D. and Bauer, E. D.},

  abstractNote = {The synthesis, crystal structure and physical properties studied by means of x-ray diffraction, magnetic, thermal and transport measurements of CeMAl4Si2 (M = Rh, Ir, Pt) are reported, along with the electronic structure calculations for LaMAl4Si2 (M = Rh, Ir, Pt). These materials adopt a tetragonal crystal structure (space group P4/mmm) comprised of BaAl4 blocks, separated by MAl2 units, stacked along the c-axis. Both CeRhAl4Si2 and CeIrAl4Si2 order antiferromagnetically below TN1 = 14 and 16 K, respectively, and undergo a second antiferromagnetic transitition at lower temperature (TN2 = 9 and 14 K, respectively). CePtAl4Si2 orders ferromagnetically below TC = 3 K with an ordered moment of μsat = 0.8 μB for a magnetic field applied perpendicular to the c-axis. Electronic structure calculations reveal quasi-2D character of the Fermi surface.},

  doi          = {10.1088/0953-8984/27/2/025601},

  journal      = {Journal of Physics. Condensed Matter},

  number       = 2,

  volume       = 27,

  place        = {United States},

  year         = {Mon Dec 15 00:00:00 EST 2014},

  month        = {Mon Dec 15 00:00:00 EST 2014}

}

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Title: Investigation of the physical properties of the tetragonal CeMAl4Si2 (M = Rh, Ir, Pt) compounds

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Title: Investigation of the physical properties of the tetragonal CeMAl₄Si₂ (M = Rh, Ir, Pt) compounds