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Ferromagnetism in the Kondo-lattice compound CePd2P2
Summary
We discovered CePd2P2 exhibits ferromagnetic ordering below 28.4 K, with critical exponents indicating complex magnetic behavior. This study identifies CePd2P2 as a new ferromagnetic Kondo-lattice material.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- CePd2P2 crystallizes in the tetragonal ThCr2Si2-type structure.
- Understanding magnetic ordering and electronic interactions in intermetallic compounds is crucial.
Purpose of the Study:
- To investigate the physical properties of CePd2P2.
- To characterize its magnetic ordering and electronic interactions.
- To classify CePd2P2 within the family of cerium-based intermetallics.
Main Methods:
- DC magnetic susceptibility measurements
- Magnetization, specific heat, electrical resistivity, and magnetoresistance measurements
- Critical analysis of magnetization data
Main Results:
- Ferromagnetic ordering observed below a Curie temperature (TC) of 28.4 ± 0.2 K.
- Determined critical exponents (β, γ, δ) and saturation moment (Ms).
- Identified competing Kondo and crystalline electric field (CEF) interactions with characteristic energy scales (TK, TK~H, ΔCEF).
Conclusions:
- CePd2P2 exhibits ferromagnetic Kondo-lattice behavior.
- The material's properties are influenced by a balance between Kondo and CEF interactions.
- CePd2P2 represents a novel addition to Ce-based ferromagnetic intermetallics.
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