ANNUAL REPORT - MTA SzFKI

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I.13 Kane * SN, Khinchi * SS, Gercsi * Zs, Gupta * A,Varga LK, Mazaleyrat * F, Jeong * YH; Structural and magnetic investigation of amorphous and gradually devitrified nanocrystalline Fe-Co-Nb-Cu-B alloys; J Korean Phys Soc; accepted for publication I.14 Varga LK, Kovács * Gy; Separation of magnetization loop in domain wall movement and domain rotation contributions for soft magnetic materials; Acta Physica Polonica A; accepted for publication I.15 Varga LK, Kovács * Gy, Takács * J; Modeling the overlapping, simultaneous magnetization processes in ultrasoft nanocrystalline alloys; J Magn Magn Mater; accepted for publication Conference proceedings I.16 Kuzmann* E, Lakatos-Varsányi* M, Varga LK, Mikó* A, Kálmán* E, Homonnay* Z, Nagy* F, Vértes* A; Mössbauer study of electrodeposited Fe/Fe-oxide multilayers; AIP Conf. Proc. 765, 211–216, 2005 Other I.17 Bárdos * A, Stoica * M, Varga LK, Roth * S, Schultz * L; Verfahren zur Herstellung metalhaltiger Gusskörper und Vorrichtung dafür, (Process and equipment for the preparation of metal-containing ingots, in German); German Patent DE 10 2005 037 982 B3 2007.03.15 See also: H.3., H.4., H.5. 44
J. NEUTRON SPECTROSCOPY IN CONDENSED MATTER L. Rosta, L. Almásy, L. Cser, I. Gladkih, I. Füzesy, J. Füzi, Gy. Káli, T. Kun, A. Len, M. Markó # , A. Meiszterics # , F. Mezei, G. Nagy # , J. Orbán, G. Pépy, E. Rétfalvi # , Zs. Sánta # , N.K. Székely # , Gy. Török, T. Veres # Structure of soft condensed matter – aqueous solutions. The structure and properties of aqueous tetramethylurea (TMU) solutions, as well as the intermolecular interactions in their solutions, were widely studied by different experimental and theoretical techniques. The special interest is attributed to the mainly hydrophobic character of the hydration due to the four methyl groups on the nitrogen atoms. Our previous studies indicated significant hydrophobic interaction between TMU molecules which becomes more attractive at higher temperatures. We extended our study to some TMU derivatives. Small angle neutron scattering (SANS) studies of the solutions of N,N-dimethylelthyleneurea (DMEU) in heavy water (D 2 O) and N,N-dimethylpropyleneurea (DMPU) in D 2 O were carried out as a function of concentration and temperature. The DMEU represents the cyclic analogue of TMU, it contains instead of two methyl groups an ethylene group, and thus has a ring structure. The DMPU is the homologue of DMEU, it has a propylene group in the ring, instead of an ethylene group. Comparing the results obtained for the solutions of DMEU and DMPU with those previously reported for TMU conclusions can be drawn about how the structural differences between these molecules affect the intermolecular interactions. Following the temperature and concentration dependence of the second osmotic virial coefficient (B/Vp) calculated from SANS results, the character of the interactions between the solute molecules can be estimated. If the values of B/Vp are more and more negative with increasing temperature, the pair interaction between the molecules becomes stronger. The hydrophobic interaction is stronger at higher temperatures. We compared the B/Vp values obtained for DMEU and DMPU solutions with those for TMU (Fig.1). In sharp contrast with the values for TMU solutions, the second osmotic virial coefficients of DMEU and DMPU are constant (within the experimental precision) with increasing temperature. Such behavior may suggest that the attractive DMEU-DMEU, and DMPU- DMPU interactions, in their aqueous solutions, is not of the hydrophobic type. B / V p 1,2 1,0 0,8 0,6 0,4 0,2 TMU 0,0 DMEU DMPU -0,2 275 280 285 290 295 300 305 310 315 320 T (K) Fig. 1. Temperature dependence of the dimensionless second osmotic virial coefficient (B/Vp) for the solutions of TMU, DMEU and DMPU in D 2 O. Applied research with neutrons – irradiation damage of reactor components. Damaged control rods of the WWR-M10 Budapest research reactor were measured by # Ph.D. student 45
Page 1 and 2: ANNUAL REPORT 2007 RESEARCH INSTITU
Page 3 and 4: Dear Reader, It is my pleasure to h
Page 5 and 6: Key figures Permanent staff of the
Page 8 and 9: A. STRONGLY CORRELATED SYSTEMS J. S
Page 10 and 11: presented detailed study should hel
Page 12 and 13: B. COMPLEX SYSTEMS F. Iglói, R. Ju
Page 14 and 15: B.3. B.4. B.5. B.6. B.7. B.8. B.9.
Page 16 and 17: the α2 reconstruction increases on
Page 18 and 19: C.2. C.3. Kádas K, Vitos L, Johans
Page 20 and 21: C.27. Ropo * M, Kokko * K, Punkkine
Page 22 and 23: I 25 4 3 Fig. 2. Average intensity
Page 24 and 25: See also H.6. and nanostructured Pd
Page 26 and 27: Ab initio structure solution. — I
Page 28 and 29: ESA PECS 98021 Phase field modeling
Page 30 and 31: Conference proceedings E.17. Oszlá
Page 32 and 33: Fig. 1. ns-EC to s-EC transition in
Page 34 and 35: Publications Articles F.1. F.2. Bö
Page 36 and 37: G. ELECTRON CRYSTALS G. Kriza, P. M
Page 38 and 39: H. METAL PHYSICS K. Tompa, I. Bakon
Page 40 and 41: thickness can be elucidated by deco
Page 42 and 43: I. METALLURGY AND MAGNETISM L.K. Va
Page 44 and 45: temperature profile increases the s
Page 48 and 49: SANS. The measured 3 control rods w
Page 50 and 51: J.3. J.4. J.5. J.6. J.7. Avdeev * M
Page 52 and 53: Macromolecular Compounds (Visokomol
Page 54 and 55: defined coordination sphere was fou
Page 56 and 57: László Temleitner temla@szfki.hu
Page 58 and 59: Book chapter K.22. Temleitner L, Pu
Page 60 and 61: Fig. 1 Characteristics of surface p
Page 62 and 63: M. LASER PHYSICS K. Rózsa, G. Bán
Page 64 and 65: Publications Articles M.1. Sigenege
Page 66 and 67: O. LASER APPLICATION A. Czitrovszky
Page 68 and 69: Raman spectroscopy is widely used f
Page 70 and 71: Bilateral Austro-Hungarian Cooperat
Page 72 and 73: P. FEMTOSECOND LASERS R. Szipőcs,
Page 74 and 75: Grants and international cooperatio
Page 76 and 77: E-Mail: Kárpát Ferencz optilab@t-
Page 78 and 79: y optical microscopy. While in Y 2
Page 80 and 81: Publications: Articles R.1. Földv
Page 82 and 83: S. CHARACTERIZATION AND POINT DEFEC
Page 84 and 85: groups of the Li 2 B 4 O 7 lattice.
Page 86 and 87: S.10. Lengyel K, Kovács L, Péter
Page 88 and 89: entanglement one has to find method
Page 90 and 91: T.7. T.8. T.9. Asbóth JK, Domokos
Page 92 and 93: EDUCATION Graduate and postgraduate
Page 94 and 95: Laboratory practice and seminars
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G. Dravecz (ELTE and Université de
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⎯ K. Kamarás: Editorial Board Me
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CONFERENCES ⎯ Electrochemistry se
Page 102:
TABLE of CONTENTS PREFACE 1 KEY FIG
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