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Ferromagnetic ordering and weak spin-glass-like effect in Pr(2)CuSi(3) and Nd(2)CuSi(3)
Dexin Li1, Xiang Zhao, Shigeki Nimori
1Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, People's Republic of China.
Pr(2)CuSi(3) and Nd(2)CuSi(3) exhibit ferromagnetic properties with unusual characteristics. These magnetic materials show evidence of large ferromagnetic clusters and a weak spin-glass-like effect below their transition temperatures.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Pr(2)CuSi(3) and Nd(2)CuSi(3) are intermetallic compounds known for interesting magnetic properties.
- Understanding their magnetic behavior is crucial for developing new magnetic materials.
Purpose of the Study:
- To investigate the magnetic and thermal properties of Pr(2)CuSi(3) and Nd(2)CuSi(3).
- To elucidate the nature of the ferromagnetic phase transition and associated phenomena in these compounds.
Main Methods:
- Measurements of temperature-dependent AC and DC susceptibilities.
- High-field magnetization, magnetic relaxation, specific heat, and electrical resistivity measurements.
- Analysis of magnetic phase transitions and cluster formation.
Main Results:
- Both compounds exhibit a ferromagnetic phase transition at characteristic temperatures (9.8 K for Pr(2)CuSi(3) and 5.6 K for Nd(2)CuSi(3)).
- Unusual features observed include irreversible magnetism, long-time magnetic relaxation, and anomalies in specific heat and electrical resistivity.
- Evidence suggests the formation of large ferromagnetic clusters with a weak spin-glass-like effect.
Conclusions:
- The observed phenomena in Pr(2)CuSi(3) and Nd(2)CuSi(3) indicate complex magnetic behavior beyond simple ferromagnetism.
- The results highlight the presence of significant ferromagnetic clusters and a subtle spin-glass-like interaction.
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