Surface Investigations of Selected Materials by Low-Energy Ion Scattering Technique

• Authors: D. Goc-Jagło , D. Sitko , G. Jagło , N. Kim-Ngan , W. Soszka
• Languages of publication: EN

Abstracts

EN

Surfaces of three selected materials were investigated by means of low-energy ion-scattering technique: (1) the magnetite (Fe_3O_4) exhibiting the so-called Verwey transition (T_V(bulk)=125 K) accompanied by a small cubic-monoclinic crystal distortion, (2) the intermetallic compound NdMn_2 undergoing an antiferromagnetic-paramagnetic phase transition (T_N=104 K) accompanied by a large crystal distortion with a volume change of 1%, and (3) the typical insulator BaTiO_3 with two structural transitions below 300 K. The primary energy of the (Ne^+, Ar^+) ion beam was in the range of 4-8 keV, and the low-energy ion-scattering spectra were collected in the temperature range of 85-300 K. A large influence from the Verwey transition on the neutralization and re-ionization of scattered ions from magnetite surface was observed, while no visible change at the magnetic phase transition in NdMn_2 was revealed in the low-energy ion-scattering spectra. A strong dependence of the characteristics of the low-energy ion-scattering spectra on the irradiated time was observed for BaTiO_3 indicating that this surface was heavily charged by ion bombardments.

Keywords

EN

68.35.Rh; 71.20.Be; 71.20.Eh; 77.80.Bh

Discipline

• 71.20.Eh: Rare earth metals and alloys
• 71.20.Be: Transition metals and alloys
• 68.35.Rh: Phase transitions and critical phenomena

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 5
• Pages: 763-771

Dates

published

2007-05

Contributors

author

D. Goc-Jagło

• Institute of Physics, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland

author

D. Sitko

• Institute of Physics, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland

author

G. Jagło

• Institute of Physics, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland

author

N. Kim-Ngan

• Institute of Physics, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland

author

W. Soszka

• Institute of Physics, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland

References

• 1. See e.g. H. Niehus, W. Heiland, W.E. Taglauer, Surf. Sci. Rep., 12, 83, 93 and references therein
• 2. E.S. Parilis, L.M. Kishinevsky, N.Yu. Turaev, B.E. Baklitzky, F.F. Umarov, V.Kh. Verleger, S.L. Nizhnaya, I.S. Bitensky, Atomic Collisions on Solid Surfaces, Elsevier Sci. Publ., North-Holland, Amsterdam 1993
• 3. N.-T.H. Kim-Ngan, W. Soszka, Z. Tarnawski, A. Kozlowski, Physica B, 353, 164, 04 and references therein
• 4. N. Tsuda, K. Nasu, A. Yanase, K. Siratori, Electronic Conductions in Oxides, in Springer Series in Solid-State Sciences, Eds. M. Cardona, P. Flude, K. von Klitzing, H.-J. Queisser, Vol. 94, Springer-Verlag, Berlin 1991
• 5. N.H. Kim-Ngan, Ph.D. Thesis, University of Amsterdam, 1993
• 6. G.H. Kwei, A.C. Lawson, S.J. Billinge, S.-W. Cheong, J. Phys. Chem., 97, 2368, 93 and references therein
• 7. A. Kozlowski, Z. Kakol, D. Kim, R. Zalecki, J.M. Honig, Phys. Rev. B, 54, 12093, 1996
• 8. J. Suchanicz, G. Stopa, K. Konieczny, J. Rymarczyk, submitted to J. Mater. Sci., 2007
• 9. N.-T.H. Kim-Ngan, W. Soszka, A. Kozlowski, J. Magn. Magn. Mater., 279, 125, 2004

Identifiers

DOI

10.12693/APhysPolA.111.763