STRUKTURNI FAZNI PREHODI V KRISTALIH IN FEROELEKTRIKI

 

V kristalih često pride pri spreminjanju temperature do faznih prehodov. Pri faznem prehodu se spremeni struktura kristala, lahko pa tudi njegove lastnostnosti. Tak primer je prehod iz paraelektrične v feroelektrično fazo. Jedrska magnetna resonanca in jedrska kvadrupolna resonanca zaznata tudi zelo majhne spremembe, do katerih pride pri faznem prehodu v okolici opazovanih jeder.

 

Objavljena dela:

1. R. Blinc, M. Mali, R. Osredkar, R. Parker, J. Seliger, S. Žumer, 75As Zeeman

    perturbed NQR in antiferroelectric NH4H2AsO4, J. Chem. Phys. 59, 2947-2950

    (1973)                                                        

2. R. Blinc, J. Seliger, R. Osredkar, T. Prelesnik,  Double resonance study of the

   17O quadrupole coupling in paraelectric and ferroelectric KH2PO4, Chem. Phys.

    Letters 23, 486-488 (1973)                    

3. R. Blinc, J. Seliger, R. Osredkar,M. Mali, 17O quadrupole resonance study of the

    ferroelectric phase transition in KH2PO4, Phys. Letters 47A, 131-132 (1974)    

4. R. Blinc, M. Mali, R. Osredkar, J. Seliger , Nitrogen and chlorine NQR in

    paraelectric and ferroelectric tris-sarcosine calcium chloride, J. Chem. Phys. 63,

    35-37 (1975)                    

5. J. Seliger, R. Blinc, H. Arend, R. Kind,  Proton-14N double resonance study of the

    structural phase transitions in the perovskite type layer compound

    (CH3NH3)2CdCl4, Z. Phys. B 25, 189-195 (1976)   

6. R. Blinc, M. Burgar, V. Rutar, J. Seliger, I. Zupančič,  31P chemical-shift study of

    the ferroelectric transition in KD2PO4, Phys. Rev. Letters 38, 92-95 (1977)       

7. R. Blinc, M. Burgar, B. Ložar, J. Seliger, J. Slak, V. Rutar, H. Arend, R. Kind,

    Proton NMR study of the structural phase transitions in perovskite layer

    compounds: (CnH2n+1NH3)2CdCl4 and (NH3-(CH2)n-NH3)CdCl4, J. Chem.

    Phys. 66, 278-287 (1977)

8. R. Kind, S. Pleško, H. Arend, R. Blinc, B. Žekš, J. Seliger, B. Ložar, J. Slak,

    A. Levstik, C. Filipič, V. Žagar, G. Lahajnar, F. Milia, G Chapuis,  Dynamics of the

    n-decylammonium chains in the perovskite-type layer structure compound

    (C10H21NH3)2CdCl4, J. Chem. Phys. 71, 2118-2130 (1979)                   

9. J. Seliger, V. Žagar, R. Blinc, 17O NQR study of the ferroelectric phase transition

    in PbHPO4, Phys. Letters A 93, 149-151 (1983)

10. J. Seliger, V. Žagar, R. Blinc, H. Arend, G. Chapuis, 14N and 35Cl double

    resonance study of the phase transition in the intercalated bilayer compound

    C10H21NH3Cl, J. Chem. Phys. 78, 2661-2664 (1983)                   

11. J. Seliger, V. Žagar, R. Blinc, L. A. Shuvalov,  87Rb and 85Rb NQR study of the

    phase transition in RbH3(SeO3)2, J. Physique 44, 521-524 (1983)         

12. J. Seliger, V. Žagar, R. Blinc, Oxygen-17 NQR study of the phase transition in

    the squaric acid, J. Magn. Reson. 58, 359-369 (1984)

13. J. Seliger, V. Žagar, R. Blinc, 17O NQR study of the pseudo-one-dimensional

    ferroelectric phase transition in CsH2PO4, J. Chem. Phys. 81, 3247-3249 (1984)

14. S. Jurga, J. Seliger, R. Blinc, H. W. Spiess, 14N and 35Cl double resonance

    study of the low-temperature phase transition in CH3NH3ClO4, Phys. Letters A

    116, 295-298 (1986)       

15. J. Seliger, V. Žagar, R. Blinc, A. Novak, 17O and 39K quadrupole resonance

    study of the ferroelastic phase transition in KH3(SeO3)2, J. Chem. Phys. 84,

    5857-5861 (1986)

16. J. Seliger, V. Žagar, R. Blinc, A. Novak, S. Rodin, 17O and 14N quadrupole

    coupling and the mechanism of the ferroelectric transition in diglycine nitrate,

    Ferroelectrics Letters 6, 93-102 (1986)            

17. J. Seliger, V. Žagar, R. Blinc, F. Milia, S. Giannacopoulos, R. Kind, Proton-14N

    double resonance study of the ferroelectric phase transition in (CH3NH3)HgCl3,

    Solid State Commun. 59, 877-879 (1986)

18. J. Seliger, V. Žagar, R. Blinc, R. Kind, H. Arend, F. Milia, 14N and 35Cl nuclear

    quadrupole double resonance study of the structural phase transitions in n-

    octylammoniumchloride, Z. Phys. B - Condensed Matter 67, 363-368 (1987)    

19. J. Seliger, V. Žagar, R. Blinc, R. Kind, H. Arend, G. Chapuis, K. J. Schenk,

    F. Milia, 14N and 35Cl nuclear quadrupole double resonance study of the phase

    transiitions in n-decylammoniumchloride and n-hexylammoniumchloride,      

    Z. Phys. B - Condensed Matter 69, 379-384 (1987) 

20. S. V. Rodin, J. Seliger, R. Blinc, V. Žagar, JKR 14N i 17O v kristalle diglicinnitrata,

    Fizika Tverdogo Tela, 29, 1871-1873 (1987)

21. J. Seliger, V. Žagar, R. Blinc, V. H. Schmidt, 17O NQR study of the

    antiferroelectric phase transition in TlH2PO4, J. Chem. Phys. 88, 3260-3262

    (1988)        

22. K. J. Schenk, G. Chapuis, R. Kind, R. Blinc, J. Seliger,  Evidence for a

    reconstructive phase transition involving hydrocarbon chain separation in the layer

    structure C10H21NH3Cl, J. Molecular Structure 176, 331-335 (1988)     

23. J. Seliger, V. Žagar, R. Blinc,14N NQR study of the structural phase transitions

    in NH4NO3, Z. Phys. B - Condensed Matter 77, 439-443 (1989)

24. R. Blinc, J. Seliger, V. Žagar, T. Apih, J. Dolinšek, H. Warhanek, A. Fuith,

    W. Schranz, 14N nuclear-quadrupole-resonance study of the sructural phase

    transitions in NH4SCN, Phys. Rev. B 42, 8125-8132 (1990)         

25. R. Blinc, J. Seliger, T. Apih, J. Dolinšek, I. Zupančič, O. Plyushch, A. Fuith,

    W. Schranz, H. Warhanek, B. Topič, U. Haeberlen, 39K NMR study of the

    antiferroelectric phase transition in potassium thiocyanate, Phys. Rev. B 43,

    569-574 (1991)                

26. W. Schranz, A. Fuith, H. Warhanek, R. Blinc, J. Seliger, T. Apih, J. Dolinšek,

    Microscopic model for the structural phase transitions in NH4SCN and KSCN,      

    Ferroelectrics 125, 683-687 (1992)

27. J. Seliger, V. Žagar, R. Blinc,  Nuclear-quadrupole double-resonance study of

    RbH2PO4 in the supercooled high-temperature monoclinic phase, Phys. Rev. B

    47, 14753-14756 (1993)

28. J. Seliger, V. Žagar, R. Blinc, 1H-75As nuclear-quadrupole double-resonance

     study of the high-temperature phase transition in TlH2AsO4, Phys. Rev. B 48,

    52-57 (1993)        

29. J. Seliger, V. Žagar, 14N nuclear quadrupole resonance study of the structural

    phase transition in phenothiazine, J. Phys.: Condens. Matter 6, 6027-6033 (1994)

30. R. Blinc, J. Seliger, T. Apih, J. Dolinšek, A. Fuith, W. Schranz, H. Warhanek,

    87Rb NMR of the structural phase transition in RbSCN, Phys. Rev. B 52, 833-840

     (1995)       

31. R. Blinc. T. Apih, A. Fricelj, J. Dolinšek, J. Seliger, A. Fuith, W. Schranz,

    H. Warhanek, D. C. Ailion, 14N NMR investigation of KSCN, Europhys. Letters 39,

    627-632 (1997)

32. J. Seliger, V. Žagar,  1H NMR and 14N NQR study of the ferroelectric phase

    transition in (CH3)2NH2H2PO4, Phys. Rev. B 57, 8160-8165 (1998)

33. J. Dolinšek, D. Arčon, Hae Jin Kim, J. Seliger, V. Žagar, P. Vanek, J. Kroupa,

    Z. Zikmund, J. Petzelt, Two-time clock NMR observation of the ferroelectric

    transition in the organic compound cyclohexane-1,1’-diacetic acid, Phys. Rev.

    B 57, R8063-R8066 (1998)

34. R. Blinc, T. Apih, J. Seliger, A. Fuith, W. Schranz, H. Warhanek, Dynamic

    symmetry breaking in KSCN: A 39K and 14N NMR study, Phase Transitions 67,

    617-629 (1999)

35. J. Dolinšek, M. Klanjšek, D. Arčon, Hae Jin Kim, J. Seliger, V. Žagar,

    L. F. Kirpichnikova, 1H and 27Al NMR study of the ferroelectric transition in

    dimethylammonium aluminium sulphate hexahydrate (CH3)2NH2Al(SO4)2.6H2O

    Phys. Rev. B 59, 3460-3467 (1999)

36. J. Seliger, V. Žagar, 2H nuclear quadrupole resonance study of the Ubbelohde

    effect in K(H1-XDX)2PO4, Phys. Rev. B 59, 13505-13508 (1999)

37. R. Blinc, A. Gregorovič, B. Zalar, R. Pirc, J. Seliger, W. Kleemann,

    S.G. Lushnikov, R. Pankrath, 93Nb NMR of the random field dominated relaxor

    transition in pure and doped SBN, Phys. Rev. B 64, 134009  (2001)

38. J. Pirnat, J. Lužnik, J. Seliger, Z. Trontelj, D. Kirin, NQR study of phase

    transitions in CH3HgX (X=Cl, Br, I), Eur. Phys. J. B35, 339-348 (2003)

39. B. Zalar, A. Lebar, J. Seliger, R. Blinc, V. V. Laguta, M. Itoh, NMR study of
    disorder in BaTiO3 and SrTiO3, Phys. Rev. B 71, 064107-1-064107-12 (2005)
40. V. V. Laguta,   R. Blinc, M. Itoh, J. Seliger, B. Zalar, 87Sr NMR of phase 
    transitions in SrTi16O3 and SrTi18O3, Phys. Rev. B 72, 214117-1-214117-9 
    (2005)
41. T Asaji, J Seliger, V Žagar, M Sekiguchi, J Watanabe, K Gotoh, H Ishida, 
    S Vrtnik, J Dolinsek, Phase transition and temperature dependent electronic 
    state of an organic ferroelectric, phenazine-chloranilic acid (1:1), J. Phys. 
    Condens.Matter 19, 226203 (2007)

42. J. Seliger, V. http://www3.interscience.wiley.com/giflibrary/12/Zcaron.gifagar , T. Asaji , A. Konnai , Temperature dependence of

    nonequivalent potential wells for pyridinium ion reorientation in pyridinium

    tetrachloroiodate(III), PyHICl4, studied by 1H-14N nuclear quadrupole double

    resonance, Magn. Reson. Chem. 46, 756-760 (2008))

43. J. Seliger, V. Žagar, T. Asaji, 14N nuclear quadrupole resonance and proton

    spin-lattice relaxation study of phase transition in pyridazine perchlorate, Solid

    State Commun. 149, 546-549 (2009) DOI: 10.1016/j.ssc.2009.01.008

44. J. Seliger, V. Žagar, T. Asaji, Y. Hasegawa, 14N NQR and proton NMR study

     of ferroelectric phase transition and proton exchange in organic ferroelectric

     (H2-TPPZ)(Hca)2, Phys. Chem. Chem. Phys. 12, 3254-3259 (2010),

      DOI:10.1039/ B925326B

45. T. Asaji, M. Hoshino, H. Ishida, A. Konnai, Y. Shinoda, J. Seliger, V. Žagar,

      Phase transition and proton exchange in 1,3-diazinium hydrogen chloranilate

      monohydrate, Hyperfine Interactions 198, 85-91 (2010)

      DOI: 10.1007/s10751-010-0205-4

46. J. Seliger, V. Žagar, T. Asaji, K. Gotoh, H. Ishida, 14N nuclear quadrupole

      resonance study of phase transitions and molecular dynamics in hydrogen

      bonded organic antiferroelectrics 55DMBP-H2ca and 1,5-NPD-H2ca,

      Phys. Chem. Chem. Phys. 13, 9165-9172 (2011) DOI: 10.1039/C0CP02873H

47. J. Seliger, J. Plavec, P. Šket, V. Žagar, R. Blinc, 17O NQR and 13C NMR

      study of hydrogen-bonded organic ferroelectric croconic acid, Phys. Status

      Solidi B 248,2091-2096 (2011), DOI 10.1002/pssb.201046649

48. J. Seliger, V. Žagar, T. Asaji, NQR investigation and characterization of

      cocrystals and crystal polymorphs, Hypefine Interactions (2012)

      DOI: 10.1007/s10751-012-0665-9

49. T. Asaji , Y. Ito , J. Seliger , V. Žagar , A. Gradisek, T. Apih, Phase transition

       and ring-puckering motion in a metal-organic perovskite 

       [(CH2)3NH2][Zn(HCOO)3], J. Phys. Chem. A 116, 12422-12428 (2012)

       DOI: 10.1021/jp310132a

50.  J. Seliger, V. Žagar, Nuclear quadrupole resonance study of hydrogen bonds

       in solid 2-methylbenzimidazole and 5,6-dimethylbenzimidazole, J Phys.

       Chem. C 117, 20193-20200 (2013) DOI: 10.1021/jp4071746

51. T. Apih, V. Žagar, J. Seliger, NMR and NQR Study of Above-Room-

      Temperature Molecular Ferroelectrics Diisopropylammonium Chloride and

      Diisopropylammonium Perchlorate, J. Phys. Chem. C 120, 6180-6189 (2016)

      DOI: 10.1021/acs.jpcc.5b12116

52. T. Apih, A. Gregorovič, V. Žagar, J. Seliger, Nuclear Quadrupole Resonance

      Study of Proton and Deuteron Migration in Short Strong Hydrogen Bonds

      Formed in Molecular Complex 3,5-Dinitrobenzoic Acid–Nicotinic Acid and in

      Deuterated 3,5-Pyridinedicarboxylic acid, J. Phys. Chem. C 120, 9992-10000

      (2016) DOI: 10.1021/acs.jpcc.6b02639