Materials Growth & Measurement Laboratory

Czech open access research infrastructure

Magnetoacoustic properties of intermetallics

Full project name:

Magnetic and magnetoacoustic properties of highly anisotropic intermetallic compounds

Project Details

The project is devoted to experimental investigation of highly anisotropic compounds containing rare-earth (R) elements or uranium. Magnetic properties of these compounds are determined first of all by the anisotropic 4f (rare earth) or 5f (U) electronic shells, so the compounds have very strong magnetic anisotropy. For this reason, the study is performed on high-quality single crystals in high magnetic fields. We study magnetization, magnetic anisotropy, magnetic phase transitions and related electronic properties of compounds with the compositions R2Fe14Si3, RFe5Al7 (with substitutions within the Fe sublattice), R3Ru4Al12, compounds based on the itinerant metamagnet UCoAl, UN. One of the tasks is also to check the existence and possibility of single-crystal growth for new interesting compounds. The study combines both bulk and microscopic methods. Special attention is be paid to magnetoacoustics (ultrasound velocity and attenuation) which is a less-studied property but a source of important information on the formation of magnetic states in f-electron compounds.

  • Principal Investigator
    Alexandr Andreev, DrSc.
  • Team
    2 PhD, 1 technician, 1 PhD student
  • Duration
  • Research area
    Magnetism in high magnetic fields

Alexandr Andreev, DrSc.

Principle investigator

Current position: Leading researcher at Institute of Physics, Czech Academy of Sciences

Current research focus: Magnetism and magnetoelasticity in highly ainostropic rare-earth and uranium intermetallcs

Fields of interest and expertise: Preparation of single crystals of intermetallic compounds, characterization the obtained samples, magnetization, magnetic anisotropy and magnetoelasticity

Role of MGML in the Project

MGML instruments are employed for single-crystal growth, samples preparation (orientation and cutting) and characterization by x-ray diffraction, measurement of magnetization in static fields.

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