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Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
Published on: May 10, 2021
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Antiferromagnetic Kondo lattice compound CePt3P
Jian Chen1,2, Zhen Wang1, Shiyi Zheng1
1Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.
Scientific Reports
|February 4, 2017
Summary
Researchers synthesized a new material, cerium platinum phosphide (CePt3P), which does not exhibit superconductivity. Instead, this compound shows antiferromagnetism and a Kondo effect, indicating it is a correlated electron system.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Solid State Chemistry
Background:
- Ternary platinum phosphides (APt3P) are known for superconductivity.
- Cerium-based compounds often exhibit heavy fermion behavior and superconductivity.
- CePt3Si is a related noncentrosymmetric heavy fermion superconductor.
Purpose of the Study:
- Synthesize and characterize a new ternary platinum phosphide, CePt3P.
- Investigate the electronic and magnetic properties of CePt3P.
- Determine if CePt3P exhibits superconductivity or other correlated electronic phenomena.
Main Methods:
- Synthesis of CePt3P.
- Magnetic measurements.
- Thermodynamic measurements (specific heat).
- Transport measurements (electrical resistivity).
Main Results:
- CePt3P crystallizes in an antiperovskite tetragonal structure.
- No superconductivity was observed down to 0.5 K.
- Antiferromagnetic ordering was observed at TN1 = 3.0 K.
- A coexistence of antiferromagnetic ordering, Kondo effect, and crystalline electric field effect was found.
- A field-induced spin-flop transition was observed.
- The Sommerfeld coefficient (γCe) is 86 mJ/mol·K², indicating a moderately correlated system.
Conclusions:
- CePt3P is a moderately correlated antiferromagnetic Kondo lattice compound.
- Unlike its superconducting counterparts, CePt3P exhibits magnetic ordering and Kondo physics.
- The interplay between magnetism, Kondo effect, and crystal electric fields is a key feature of CePt3P.
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