There is a continuous interest in the properties of II-VI based diluted magnetic semiconductors. The mixed crystals containing Mn and pure MnTe were the object of intensive studies for many years.
The zinc blende modification of MnTe is a metastable phase of this compound and can be grown by the non-equilibrium growth methods only (like, e.g., MBE). Several properties of this compound are now well known. On the contrary, the knowledge about the properties of hexagonal (stable) phase of MnTe is much more limited.
We have started to study the low-frequency collective excitations in hexagonal MnTe by means of inelastic neutron scattering. Single MnTe crystals were grown and characterized at the Institute of Physics of the Polish Academy of Sciences in Warsaw. Neutron scattering measurements were performed at Laboratoire Leon Brillouin in Saclay (France). Low-frequency acoustic phonons as well as magnetic excitations (magnons) have been observed at room temperature and their dispersion along selected high-symmetry directions of the Brillouin zone has been determined. Results of our preliminary measurements were compared with the dispersion of magnons in zinc blende MnTe. The similarities and the differences in the lattice dynamics and in the magnetic properties of both MnTe phases were shown and discussed.

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1. (Cd, Mn)Te Crystals for X and Gamma Radiation Detectors - an Alternative Material to CdTe and (Cd,Zn)Te. 
2. SEM studies of the etched surface of (Cd,Mn)Te
3. Neutron scattering studies of short-period MnTe/ZnTe superlattices: magnetic order, magnon propagation and confinement
4. X-ray diffraction studies of (Pb,Cd)Te solid solution – possible new material for thermoelectric applications
5. Hexagonal MnTe with NiAs structure: thermal expansion coefficients and exchange striction
6. Optical properties of GaAs:Mn nanowires
7. 1D ZnO-based structures obtained by thermal oxidation of ZnTe and ZnTe/Zn nanowires
8. Physical properties of unique ZnO single crystals from Oława Foundry
9. The influence of growth atmosphere on the self-selection of the grains during ZnO crystal growth
10. Low-temperature expansion of metastable Pb_1-xCd_xTe solid solution
11. Far-infrared and Raman Spectroscopy of CdTe_0.97Se_0.03(In)
12. Influence of hydrogen on hydrogenated cadmium telluride optical spectra
13. Raman spectroscopy of ZnTe-based nanowires grown by MBE ^*
14. Optical phonon dispersion for zinc-blende semiconductors
15. Raman spectroscopy and magnetic properties of bulk Zn₀₉₈₄Co_0.016O crystal
16. Additional  Phonon Modes related to intrinsic defects in CdHgTe
17. Phonon and vibrational spectra of real crystals obtained using the synchrotron radiation
18. ZnO homoepitaxial growth by Atomic Layer Epitaxy technique.
19. Catalytic growth by molecular beam epitaxy and properties of ZnTe-based semiconductor nanowires
20. Preparation of the ZnO substrate surface
21. Electrical contacts to semi-insulating (Cd,Mn)Te:V
22. Influence of hydrogen on optical spectra of hydrogenated CdTe
23. Effect of the Annealing Atmosphere on the Quality of ZnO Crystal Surface
24. Structure properties of bulk ZnO crystals
25. Materials requirements in the group - CdTe, CdZnTe and CdMnTe - and recent advances for X-ray and gamma-ray applications.
26. Applications of the II-VI semimagnetic semiconductors
27. Promising high quality short period Fe/Fe-N multilayers deposited by the sputtering
28. Magnetic stripe domains in Fe/Fe-N multilayers
29. Is the (Cd,Mn)Te crystal a prospective material for X-ray and γ-ray detectors?
30. The local crystalline structure of ZnCdTe alloys obtained by Far Infrared Synchrotron Radiation measurements
31. Defects induced by oxygen and hydrogen in CdTe crystals
32. ELECTRICAL AND OPTICAL PROPERTIES OF ZnO AND ZnO:Cr CRYSTALS, GROWN BY CVT METHOD
33. Structural and optical characterization of epitaxial layers of CdTe/PbTe grown on BaF₂ (111) substrates
34. HIGH PRESSURE ANNEALING-INDUCED REDUCTION IN DEGREE OF COMPENSATION IN (Zn,Mn)Te CRYSTALS
35. Folded Acoustic phonons in (CdTe)_n/(MnTe)_m superlattices
36. Area detector as a tool to study properties of the magnetic multilayers by the neutron scattering
37. Influence of hydrogen adsorption on magnetic properties of Fe films and multilayers
38. CVT contactless growth of ZnO crystals
39. High-pressure phase transition and compressibility of zinc-blende HgZnSe mixed crystals
40. Structure characterisation of MBE-grown ZnSe:Cr layers
41. Mn doped ZnTe (110) (1x1) surface in Resonant Photoemission study
42. Differential Reflectivity and Photoemission study of ZnTe and CdTe(110) surface