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Ising-type Magnetic Anisotropy in CePd2As2.
M O Ajeesh1, T Shang2, W B Jiang2
1Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187, Dresden, Germany. ajeesh@cpfs.mpg.de.
Scientific Reports
|August 6, 2017
Summary
We studied CePd2As2, finding strong Ising-type magnetic anisotropy due to crystalline electric fields. This material exhibits a clear spin-flip transition in an antiferromagnetic state, confirming localized 4f-electron behavior.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Understanding anisotropic magnetic properties is crucial for novel electronic devices.
- Cerium-based intermetallic compounds are known for complex magnetic behaviors.
Purpose of the Study:
- To investigate the anisotropic magnetic properties of CePd2As2 single crystals.
- To elucidate the nature of magnetic ordering and anisotropy in this material.
Main Methods:
- Magnetic, thermal, and electrical transport measurements.
- X-ray diffraction for structural confirmation.
- Crystalline Electric Field (CEF) analysis.
Main Results:
- CePd2As2 exhibits a strong Ising-type magneto-crystalline anisotropy.
- A uniaxial antiferromagnetic transition was observed at 14.7 K with the c-axis as the easy axis.
- A metamagnetic spin-flip transition occurred at 0.95 T along the c-axis.
Conclusions:
- The material displays localized 4f-electron magnetism without significant Kondo interactions.
- The observed spin-flip transition is a textbook example for Ising-type antiferromagnetism.
- CePd2As2 is a promising material for studying fundamental magnetic phenomena.
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