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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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Spin glass-like transition in the structurally disordered intermetallic compound Sm2Au1.1Ge2.9
L S Litzbarski1,2,3, M J Winiarski4,5, T Klimczuk4,5
1Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233, Gdansk, Poland. leszek.litzbarski@pg.edu.pl.
Scientific Reports
|November 23, 2025
Summary
A new samarium (Sm) intermetallic compound, Sm2Au1.1Ge2.9, was synthesized and found to exhibit a cluster glass transition at 21.9 K. This high transition temperature suggests potential applications in magnetic memory devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Solid State Chemistry
Background:
- Intermetallic compounds are crucial for advanced material applications.
- Samarium-based compounds are known for their diverse magnetic properties.
- Understanding structure-property relationships in novel materials is key for technological advancement.
Purpose of the Study:
- To synthesize and characterize a new intermetallic compound, Sm2Au1.1Ge2.9.
- To investigate the crystallographic, magnetic, and thermal properties of this novel compound.
- To explore its potential for technical applications, particularly in magnetic memory devices.
Main Methods:
- Arc-melting synthesis method.
- Powder X-ray diffraction for crystallographic analysis.
- AC and DC magnetization measurements, including time evolution of remnant magnetization and magnetic memory effect studies.
- Heat capacity measurements with and without an applied magnetic field.
Main Results:
- The compound Sm2Au1.1Ge2.9 crystallizes in a disordered AlB2-type structure (space group P6/mmm).
- Lattice parameters were determined as a = 4.2495(1) Å and c = 4.1300(1) Å.
- A cluster glass transition was observed at a high temperature of Tf(39 Hz) = 21.9 K.
Conclusions:
- The novel Sm2Au1.1Ge2.9 compound exhibits unique magnetic properties.
- The observed high cluster glass transition temperature makes it a promising candidate for magnetic memory applications.
- Further research into its magnetic behavior and potential applications is warranted.
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