[1] 学術雑誌発表論文／papers

 

1. “Magnetic Compton Scattering on Sr-Doped LaCoO₃”
   Y. Kobayashi, N. Tsuji and Y. Sakurai : Crystals 11 (2021), 577_1-7 (This article belongs to the Special Issue Spectroscopy and Imaging of Compton Scattering X-rays)
   
   
2. "The symmetry change of Co-3d orbital associated with the 500 K spin-crossover accompanied by insulator-to-metal transition in LaCoO₃"
   Y. Kobayashi, Y. Sakurai, N. Tsuji, K. Sato and K. Asai : Phys. Rev. B98 (2018) 115154_1-7
   
   
3. "Crystal orientation dependence of magnetostriction of twinned perovskite cobalt oxide"
   K. Sato, K. Minagawa, M. Nakamura, T. Ichikawa, Y. Hara, K. Nakaoka, Y. Kobayashi,, K. Asai : J. Alloys and Compounds 752 (2018) 327-331.
   
   
4. "Ce Core Level Spectroscopy, and Magnetic and Electrical Transport Properties of Lightly Ce-doped YCoO₃" :
   Y. Kobayashi, T. Koike, M. Okawa, R. Takayanagi, S. Takei, M. Minohara, M. Kobayashi, K. Horiba, H. Kumigashira, A. Yasui, E. Ikenaga, T. Saitoh and K. Asai : J. Phys. Soc. Jpn. 85 (2016), 114704_1-8.
   
   
5. "Direct Evidence of the Symmetry Change of Co-3d Orbitals Associated with the Spin-State Transition in LaCoO₃ by X-ray Compton Scattering" :
   Y. Kobayashi, Y. Sakurai, M. Itou, K. Sato and K. Asai : J. Phys. Soc. Jpn. 84 (2015) 114706_1-4.
   
   
6. "Field-Induced Spin-State Transition in LaCo_1-xM_xO₃ (M = Al, Ga, Rh, and Ir) ":

K. Sato, A. Matsuo, K. Kindo, Y. Hara, K. Nakaoka, Y. Kobayashi, and K. Asai : J. Phys. Soc. Jpn. 83 (2014) 114712_1-10.

7. "Change in Pr-4f ground state in Pr_1-xY_xCoO₃" :
   Y. Kobayashi, Y. Terakado and K. Asai : J. Phys. Soc. Jpn. 83 (2014) 104704_1-5.
   
   
8. "Magnetic Anomaly of La_1|xM_xFeO₃ (M = Ca, Sr, and Ba) around 100 K" :
   Y. Nakamae, S. Ishida, W. Takemura, M. Ohno, A. Okada, T. Mitsui, Y. Kobayashi, J. Nakamura and K. Asai :
   J. Phys. Soc. Jpn. 83 (2014) 063701-4.
   
   
9. "Magnetic Properties of the Double-Perovskites (Sr_1|xLa_x)₂CoMO₆ with M = Sb, Nb, and Ta " :
   Y. Kobayashi, M. Kamogawa, Y. Terakado and K. Asai : J. Phys. Soc. Jpn. 81 (2012) 044708_1-7.
   
   
10. "Spin State of Co Ions in Lightly Doped Strontium LaCoO₃: Via Study of High-Field Induced Spin State Transition" :
    K. Sato, K. Matsuo, K. Kindo, Y. Kobayashi and K. Asai : J. Phys. Soc. Jpn. 80 (2011) 104702_1-6.
    
    
11. "Extraordinary Hall Effect in Ba_1-xSr_xRuO₃ films" :
    Y. Kobayashi, M. Iwata, T. Kaneko, K. Sato, K. Asai and H. Ohsumi : Phys. Rev. B82 (2010) 174430_1-6.
    
    
12. "Extraordinary Hall Effect in Ba_1-xSr_xRuO₃" :
    Y. Kobayashi, M. Iwata, T. Kaneko, K. Sato and K. Asai : Journal of Physics: Conference Series 200 (2010) 012090_1-4.
    
    
13. "Magnetic and Transport Properties in Ba_1-xSr_xRuO₃ Single Crystals" :
    Y. Kobayashi, T. Kaneko and K. Asai : Journal of Physics: Conference Series 200 (2010) 012091_1-4.
    
    
14. "⁵⁵Mn NMR in Ferromagnetic Double Perovskites La_1-xBi_xNi_0.5Mn_0.5O₃" :
    K. Asai, T. Kawakami, S. Enoshita, M. Shiozawa and Y. Kobayashi : J. Phys. Soc. Jpn. 78 (2009) 114719_1-5.
    
    
15. "Field Induced Spin-State Transition in LaCoO₃" :
    K. Sato, K. Matsuo, K. Kindo, Y. Kobayashi and K. Asai : J. Phys. Soc. Jpn. 78 (2009) 093702_1-4.
    
    
16. "Crystal Structure of six-layer Ba_1-xSr_xRuO₃" :
    Y. Kobayashi, T. Ohishi, T. Kaneko, M. Iwata and K. Asai : J. Phys. Soc. Jpn. 78 (2009) 094601_1-5.
    
    
17. "Hyperfine Magnetic Field at ⁵⁵Mn in Ferromagnetic Perovskites REMn_0.5(Ni_1-xMg_x)_0.5O₃ with RE = La, Pr, Nd and Eu - RE Dependence of Supertransferred Hyperfine Interaction -" :
    T. Kawakami, S. Enoshita, M Kamogawa, Y. Kobayashi and K. Asai : J. Phys. Soc. Jpn. 77 (2008) 094714_1-7.
    
    
18. "Crystal Structure, Magnetism and Dielectric properties of La_1-xBi_xNi_0.5Mn_0.5O₃"
    : Y. Kobayashi, M. Shiozawa, K. Sato, K. Abe and K. Asai : J. Phys. Soc. Jpn. 77 (2008) 084701_1-8.
    
    
19. "High field magnetostriction of spin-state transition compound LaCoO₃":
    K. Sato, M. I. Bartashevich, T. Goto, Y. Kobayashi, M. Suzuki, K. Asai, A. Matsuo and K. Kindo : J. Phys. Soc. Jpn. 77 (2008) 24601-24606.
    
    
20. "Structural characterization by electronic transport properties on Fe₃Si films":
    Y. Kobayashi, T. Kaneko, M Kamogawa, K. Asai, K. Akiyama and H. Funakubo : J. Phys. D: Appl. Phys. 40 (2007) 6873-6878.
    
    
21. "Electronic structure of La_1-xPr_xCoO₃ and NdCoO₃ studied by photoemission spectroscopy" :
    T. Saitoh, D. Ishii, A. Hachimura, M. Hirose, Thant Sin Naing, Y. Kobayashi, K. Asai, M. Nakatake, M. Higashiguchi, K. Shimada, H. Namatame, and M. Taniguchi : J. Magn. & Magn. Mater. 310 (2007) 981-983.
    
    
22. "Structral analysis of iron mixed-valence complex (n-C₃H₇)₄N[Fe^IIFe^III(dto)₃] (dto=C₂O₂S₂) under high pressure" :
    M. Itoi, N. Kida, Chin-Lin, M. Koeda, N. Kojima, M. Hedo, Y. Uwatoko Y. Kobayashi, K. Asai, Y. Ohishi and M. Takata : J. Phys. Soc. Jpn. 76 (2007) suppl. A, 190-191. 
    
    
23. "Spin-state transition in La_1-xPr_xCoO₃" :
    Y. Kobayashi, T. Mogi and K. Asai : J. Phys. Soc. Jpn. 75 (2006) 104703-104708.
    
    
24. "Ultrasonic Measurement of LaCoO₃ -Evidence for the Orbital-Order Fluctuation-" :
    Thant Sin Naing, T. Kobayashi, Y. Kobayashi, M. Suzuki and K. Asai : J. Phys. Soc. Jpn. 75 (2006) 84601-84608.
    
    
25. "Uniaxial pressure effect on RENi₂B₂C(RE =Ho and Y) " :
    Y. Kobayashi, M. Iwata, T. Okamoto, H. Takeya, K. Kuroki, M. Suzuki, K. Asai : Physica B 378-380 (2006) 475-476.
    
    
26. "Neutron scattering study of phonons in LaCoO₃" :
    Y. Kobayashi, : Thant Sin Naing, M. Suzuki, M. Akimitsu, K. Asai, K. Yamada, J. Akimitsu, P. Manuel, J. M. Tranquada, G. Shirane : Physica B 378-380 (2006) 532-533.
    
    
27. "Inelastic neutron scattering study of phonons and magnetic excitations in LaCoO₃":
    Y. Kobayashi, : Thant Sin Naing, M. Suzuki, M. Akimitsu, K. Asai, K. Yamada, J. Akimitsu, P. Manuel, J. M. Tranquada and G. Shirane : Phys. Rev. B72 (2005) 174405-174411.
    
    
28. "⁵⁵Mn NMR in Ferromagnetic Perovskites RENi_0.5Mn_0.5O₃ (RE = Rare Earth Element)h :
    K. Asai, N. Kobayashi, T. Bairo, N. Kaneko, Y. Kobayashi, M. Suzuki, Y. Sato and M. Mizoguchi : J. Phys. Soc. Jpn. 74 (2005) 1289-1295.
    
    
29. "PRESSURE-INDUCED CHARGE-TRANSFER PHASE TRANSITION IN A MIXED-VALENCE IRON COMPLEX" :
    Y. Kobayashi, M. Itoi, N. Kojima and K. Asai : J. Magn. & Magn. Mater. 272-276 (2004) 1091-1092.
    
    
30. "MAGNETIC AND TRANSPORT PROPERTIES IN La_1-xPr_xCoO₃ SINGLE CRYSTALS " :
    Y. Kobayashi, T. Nakajima and K. Asai : J. Magn. & Magn. Mater. 272-276 (2004) 83-84.
    
    
31. "Crystal structure and structural transition caused by charge-transfer phase transition for iron mixed-valence complex (n-C₃H₇)₄N[Fe^IIFe^III(dto)₃] (dto=C₂O₂S₂) " :
    M. Itoi, A. Taira, M. Enomoto, M. Matsushita, N. Kojima, Y. Kobayashi, K. Asai, K. Koyama, T. Nakano, Y. Uwatoko and J. Yamaura : Solid State Commun. 130 (2004) 415-420.
    
    
32. "Pressure Effect on Charge-Transfer Phase Transition in a Mixed-Valence Iron Complex, (n-C₃H₇)₄N[Fe^IIFe^III(dto)₃] (dto=C₂O₂S₂) ":
    Y. Kobayashi, M. Itoi, N. Kojima and K. Asai : J. Phys. Soc. Jpn. 71 (2002) 3016-3020.
    
    
33. "Pressure Effect on Ferromagnetic Transition and Charge Transfer Phase Transition in a Mixed-Valence Iron Complex, (n-C₃H₇)₄N[Fe^IIFe^III(dto)₃] (dto=C₂O₂S₂) ":
    M. Itoi, N. Kojima, Y. Kobayashi and K. Asai : Mol. Cryst. Liq. Cryst. 379 (2002) 377-382 .
    
    
34. "Magnetic, Electronic, and Calorimetric Investigations of La_1-xCa_xCoO₃ in Comparison with La_1-xSr_xCoO₃ ":
    K. Muta, Y. Kobayashi and K. Asai : J. Phys. Soc. Jpn. 71 (2002) 2784-2791.
    
    
35. "Anomalous Hall effect in La_1-xCa_xCoO₃":
    S. A. Baily, M. B. Salamon, Y. Kobayashi and K. Asai: Appl. Phys. Lett. 80 (2002) 3138-3140.
    
    
36. "Hall Effect and Thermoelectric Power in Co/Cu(Mn) Multilayers ":
    Y. Kobayashi, Y. Aoki, H. Sato, R. Loloee and W. P. Pratt, Jr. : J. Magn. & Magn. Mater. 238 (2002) 84-90.
    
    
37. "Hall effect and thermoelectric power correlated with the giant magnetoresistance in modified FeRh compounds " :
    Y. Kobayashi, K. Muta and K. Asai : J. Phys.: Condens. Matter. 13 (2001) 3335-3346.
    
    
38. "Structural Phase Transition from Rhombohedral to Cubic in LaCoO₃" :
    Y. Kobayashi, T. Mitsunaga, G. Fujinawa, T. Arii, M. Suetake K. Asai and J. Harada : J. Phys. Soc. Jpn. 69 (2000) 3468-3469.
    
    
39. "Nuclear-spin relaxation of ⁵⁹Co correlated with the spin-state Transition in LaCoO₃" :
    Y. Kobayashi, N. Fujiwara, S. Murata, K. Asai and H. Yasuoka : Phys. Rev. B62 (2000) 410-414.
    
    
40. "A non-symmetric metamagnetic transition in UNiAl " :
    V. Sechovsky, Y. Kobayashi, H. Sato, H. Aoki, K. Prokes and E. Br_ck : Physica B 281&282 (2000) 210-211.
    
    
41. "NMR study of the spin-state-transitions in LaCoO₃" :
    Y. Kobayashi, N. Fujiwara, S. Murata, K. Asai and H. Yasuoka : Physica B 281&282 (2000) 512-513.
    
    
42. "Resonance photoemission of LaCoO₃ and La_0.9Sr_0.1CoO₃ (111) " :
    A. G. Thomas, W. R. Flavell, P. M. Dunwoody, C. E. J. Mitchell, S. Warren, S. C. Grice, P. G. D. Marr, D. E. Jewitt, N. Khan, V. R. Dhanak, D. Teehan, E. A. Seddon, K. Asai, Y. Kobayashi and N. Yamada : J. Phys.: Condense. Matter 12 (2000) 9259-9279.
    
    
43. "Electric Structure and Surface Reactivity of La_1-xSr_xCoO₃ " :
    W. R. Flavell, A. G. Thomas, J. Hollingworth, S. Warren, P. M. Dunwoody, C. E. J. Mitchell, P. G. D. Marr, D. Teehan, S. Downes, E. A. Seddon, V. R. Dhanak, K. Asai, Y. Kobayashi and N. Yamada : Faraday Disscuss. 114 (1999), 407-420.
    
    
44. "Transport properties of multilayers with nano-scale ":
    Y.K. Aoki, H. Sato, Y. Kobayashi, H. Sugawara, Y. Aoki, T. Ono, K. Shigeto and T. Shinjo : J. Magn. & Magn. Mater. 198-199 (1999) 213-215.
    
    
45. "Characterization and flux flow experiments in CeRu₂  ":
    M. Hedo, Y. Kobayashi, Y. Inada, E. Yamamoto, Y. Haga, J. Suzuki, N. Metoki, Y. Onuki, H. Sugawara, H. Sato, T. Tenya, T. Tayama, H. Amituka and T. Sakakibara: Physica B 259-261 (1999) 688-689.
    
    
46. "Magnetic and Transport Properties of LaCo_1-xNi_xO₃ - Comparison with La_1-xSr_xCoO₃":
    Y. Kobayashi, S. Murata, K. Asai, J. M. Tranquada, G. Shirane and K. Kohn: J. Phys. Soc. Jpn. 68 (1999) 1011-1017.
    
    
47. "Extraordinary interlayer coupling in Co/Cu(Mn) Multilayers ":
    Y. Kobayashi, Y. Aoki, H. Sato, R. Loloee and W. P. Pratt, Jr. : Phys. Rev. B59 (1999) 3734-3739.
    
    
48. "Elastic anomalies with the spin-state transitions in LaCoO₃ " :
    S. Murata, S. Isida, M. Suzuki, Y. Kobayashi, K. Asai and K. Kohn: Physica B 263-264 (1999) 647-649.
    
    
49. "Transport properties in Co-Al-O and Fe-Al-O granular systems" :
    H. Sato, Y. Kobayashi, K. Hashimoto, Y. Aoki, H. Sugawara, S. Mitani, H. Fujimori and S. Ohnuma: J. Magns. Soc. Jpn. 23 (1999) 73-75.
    
    
50. "Magnetic Properties of REMe_0.5Ni_0.5O₃ (RE=Rare Earth Element, Me=Ni, Co)" :
    K. Asai, K. Fujiyoshi, N. Nishimori, Y. Satoh, Y. Kobayashi and M. Mizoguchi: J. Phys. Soc. Jpn. 67 (1998) 4218-4228.
    
    
51. "Peak Effect in CeRu₂: Role of Crystalline Defects " :
    M. Hedo, Y. Kobayashi, Y. Inada, E. Yamamoto, Y. Haga, J. Suzuki, N. Metoki, Y. Onuki, H. Sugawara, H. Sato, T. Tenya, T. Tayama, H. Amituka and T. Sakakibara: J. Phys. Soc. Jpn. 67 (1998) 3561-3569.
    
    
52. "Thermoelectric power and Hall effect in Co-Al-O granular films" :
    H. Sato, Y. Kobayashi, K. Hashimoto, Y. Aoki, H. Sugawara, S. Mitani, H. Fujimori and S. Ohnuma: J. Phys. Soc. Jpn. 67 (1998) 2193-2196.
    
    
53. "Magnetoresistance, Hall effect, and thermoelectric power in spin valves" :
    H. Sato, S. Miya, Y. Kobayashi, Y. Aoki, H. Yamamoto and M. Nakada: J. Appl. Phys. 83 (1998) 5927-5932.
    
    
54. "Hall effect in Fe-Ag granular alloys" :
    Y. Kobayashi, H. Honda, Y. Aoki, H. Sato, T. Ono, T. Shinjo, S. A. Makhlouf, K. Sumiyama and K. Suzuki : J. Magn. & Magn. Mater. 176 (1997) 164-168.
    
    
55. "Mixed State transport properties and peak effect in f-electron superconductors " :
    H. Sato, Y.Aoki, Y. Kobayashi, H.-R. Sato, T. Nishigaki, H. Sugawara, M. Hedo, Y. Inada and Y. Onuki,: Physica B 230-232 (1997) 402-405.
    
    
56. "Metamagnetism and electronic structure of UNiGa " :
    L. Havela, V. Sechovsky, Y. Aoki, Y. Kobayashi, H. Sato, K. Prokes, M. Mihalik and A. Menovsky : J. Appl. Phys. 81 (1997) 5778-5780.
    
    
57. "Hall Effect and Thermoelectric Power in UNiGa " :
    Y. Kobayashi, Y. Aoki, H. Sugawara, H. Sato, V. Sechovsky, L. Havela, K. Prokes, M. Mihalik and A. Menovsky : Phys. Rev. B 54 (1996) 15330-15334.
    
    
58. "Thermoelectric power in Fe-based granular alloys " :
    Y. Kobayashi, H. Honda, Y. Aoki, H. Sato, T. Ono, T. Shinjo, S. A. Makhlouf, H. Hihara, K. Sumiyama and K. Suzuki : J. Phys.: Condens. Matter. 8 (1996) 11105-11110.
    
    
59. "Magnetic state of Ce in thin layers " :
    Y. Aoki, H. Sato, K. Komaba, Y. Kobayashi, H. Sugawarea, S. Hashimoto, T. Yokoyama and T. Hanyu, Phys. Rev. B 54 (1996) 12172-12177.
    
    
60. "Normal and Superconducting State Properties of Rare-Earth Intermetallic Compounds; CeRu₂, CeCo₂ and Yb₃Rh₄Sn₁₃ " :
    H. Sato, Y.Aoki, Y. Kobayashi, H.-R. Sato, T. Nishigaki, H. Sugawara, T. Fukuhara and Y. Onuki,: J. Phys. Soc. Jpn. 65 suppl. B (1996) 209-215.
    
    
61. "Superzone gap formation evidenced by specific heat in UNiGa" :
    Y. Aoki, Y. Kobayashi, H. Sugawara, H. Sato, V. Sechovsky, L. Havela, K. Prokes, M. Mihalik and A. Menovsky : J. Phys. Soc. Jpn. 65 (1996) 3312-3316.
    
    
62. "The extraordinary Hall effect of Pd/Co multilayers" :
    Y. Aoki, K. Honda, H. Sato, Y. Kobayashi, S. Hashimoto, T. Yokoyama, T. Hanyu : J. Magn. & Magn. Mater. 162 (1996).1-6.
    
    
63. "Transport Properties of Co/Cu(Mn) Multilayers" :
    Y. Kobayashi, H. Sato, Y. Aoki, R. Loloee and W. P. Pratt, Jr. : J. Magn. & Magn. Mater. 156 (1996) 362-364.
    
    
64. "Oscillations of Hall resistivity and thermoelectric power in Co(Fe)/Cu multilayers" :
    H. Sato, Y. Kobayashi, Y. Aoki, Y. Saito and K. Inomata : J. Magn. & Magn. Mater. 156 (1996) 247-249.
    
    
65. "Hall Effect and Thermoelectric Power in Multilayers Prepared on Microstructured Substrate" :
    Y. Kobayashi, Y. Aoki, H. Sato, T. Ono and T. Shinjo : J. Phys. Soc. Jpn. 65 (1996) 1910-1913.
    
    
66. "Flux Flow Transport Properties and Peak Effect in CeRu₂ Single Crystal" :
    H. Sato, Y. Kobayashi, H. Sugawara, Y. Aoki, R. Settai and Y. Onuki : J. Phys. Soc. Jpn. 65 (1996) 1536-1539.
    
    
67. "Superconducting Properties and de Haas-van Alphen Effect in CeCo₂ Single Crystal" :
    H. Sugawara, O. Inoue, Y. Kobayashi, H-r. Sato, T. Nishigaki, Y. Aoki, H. Sato, R. Settai and Y. Onuki : J. Phys. Soc. Jpn. 64 (1995) 3639-3642.
    
    
68. "Oscillations in the Hall resistivity in Co(Fe)/Cu multilayers" :
    H. Sato, Y. Kobayashi, Y. Aoki, Y. Saito and K. Inomata : Phys. Rev. B52 (1995) 9823-9826.
    
    
69. "Transport properties in granular Co-Ag alloys" :
    H. Sato, Y. Kobayashi, Y. Aoki and H. Yamamoto : J. Phys.: Condens. Mater. 7 (1995) 7053-7062.
    
    
70. "Exchange Coupling in Co/Cu(Mn) Multilayers " :
    H. Sato, Y. Kobayashi, Y. Aoki, R. Loloee and W. P. Pratt, Jr. : J. Magn. & Magn. Mater. 140-144 (1995) 567-568.
    
    
71. "Giant magnetoresistance related transport properties in multilayers and bulk materials " :
    H. Sato, H. Henmi, Y. Kobayashi, Y. Aoki, Y. Yamamoto T. Shinjo and V. Sechovsky : J. Appl. Phys. 76 (1994) 6919-6924.
    
    
72. "The giant magnetoresistance and the anomalous Hall effect in molecular-beam-epitaxy grown Co/Cu superlattices" :
    Y. Kobayashi, H. Sato, Y. Aoki and A. Kamijo: J. Phys.: Condens. Matter. 6 (1994) 7255-7267.
    
    
73. "The Giant magnetoresistance in MBE-grown Co/Cu Multilayers " :
    Y. Kobayashi, H. Sato, Y. Aoki, A. Kamijo and M. Abe : J. Magn. & Magn. Matter. 126 (1993) 501-503.
    
    
74. "Anomalous Hall effect in magnetic multilayers " :
    Y. Aoki, H. Sato, Y. Kobayashi, K. Honda, T. Kumano, S. Hashimoto, T. Yokoyama, T. Hanyu, T. Kaneko and R. Yamamoto : J. Magn. & Magn. Mater. 126 (1993) 448-450.
    
    
75. "Huge magnetic field dependent thermal conductivity in magnetic multilayered films" :
    H. Sato, Y. Aoki, Y. Kobayashi, H. Yamamoto and T. Shinjo : J. Magn. & Magn. Mater. 126 (1993) 410-412.
    
    
76. "Kondo-like scattering Correlated with the Giant Magnetoresistance in Au/Fe Superlattices" :
    H. Sato, Y. Kobayashi, Y. Aoki, K. Shintaku, N. Hosoito and T. Shinjo : J. Phys. Soc. Jpn. 62 (1993) 3380-3383.
    
    
77. "Giant magnetic field effect on thermal conductivity of magnetic multilayers, Cu/Co/Cu/Ni(Fe) " :
    H. Sato, Y. Aoki, Y. Kobayashi, H. Yamamoto and T. Shinjo : J. Phys. Soc. Jpn. 62 (1993) 431-434.
    

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