強相関電子系ペロブスカイト遷移金属酸化物による光エレクトロニクス 平成 12 年 11 月 ~ 平成 18 年 3 月 研究代表者 : 花村榮一 ( 千歳科学技術大学光科学部 教授 )

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1 強相関電子系ペロブスカイト遷移金属酸化物による光エレクトロニクス 平成 12 年 11 月 ~ 平成 18 年 3 月 研究代表者 : 花村榮一 ( 千歳科学技術大学光科学部 教授 )

2 χ αβγω χ αβγωβγ αχ χ -1 -

3 ω ω Γ ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω -2 -

4 -3 -

5 BO 2 (Rutile) TiO 2 YMnO ABO 3, KNbO 3, KTaO AB 3 2 O 4 (Spinel) 3 B 2 O 3 (Corundum) α-fe 2 O 3, Cr 2 O 3,Al 2 O 3 σ -4 -

6 -5 -

7 χ αβγω χ αβγω α ω ω ω π Γ Γ ω ω ω ω ω ω ω ω ω ω ω ω -6 -

8 -7 -

9 α γ γ Γ α-fe 2 O 3 α-fe 2 O 3-8 -

10 ωβγ α α ω χ αβγ ω YMnO 3 YMnO 3 Mn

11 a ( 2ω ) ε χ ( 2ω) ( ω) ( ω) P = E E 0 αβγ γ γ χ ω χ ω () i 1 εχ 0 ( 2ω) P zyy z E 2hω 1 ( c) 1 γ εχ 0 ( 2ω) S yyy z Pz + E 2 2hω E 1 2hω γ χ χ ω χ ωχ ω YMnO 3 (a) χ (i) zyyxy2 (b) χ (c) yyy6 T < T N S x 2 aχ (i) zyy(2ω) Pz bχ (c) yyy(2ω) P z S x cχ (i) zyy(2ω)χ (c) yyy(2ω) S x

12 Σ Σ ( ) z 2 2 Σ{ ξξ ( ) iξ ηη iη ξ ξ ξ } H = J S S + d S S 2 ij i j ij i j ij ij H = D S + D S + D S S + S S anis z i iz iz i i Eanis = V0 Pz ( SxSz + SzSx ) Γ α ω ω ω ω ω ω ω ω ω FEL DB AFM DW operates σ h operates σ v P z, S x, S z -P z, -S x, S z P z, S x, S z P z, -S x, -S z At FEL DB, both (P z, S x ) change sign simultaneously. The clamping of (P z, S x ) at FEL DB is stabilized by E anis. Only S x and S z changes sign. S z is a hidden order-parameter. The AFM DW can exist independently of FEL DB

13 KTaO cm -1 CARSω 1 - ω 2 = 770 cm -1 TO4 + KTaO 3 CARS BZTO 4 CARS BZ CARSP 2 1 ħω ω ω ω ω ω µ

14 Γ ω ω ω ω ω ω θ z ω ω ω ω ω ω ω θ ω θ ω ω ω ω ω ω KNbO 3 CARS ω 6565cm µ ω 5952cm µ ω613cm ω ω Wave number[cm -1 ] calculated SHG-phase matching curve ω 1 +ω 2 Calculated-CARS 2ω 2 2ω Angle[degree] Experimental value KNbO 3 CARS 11 ω 1 = 6565 cm -1 5µJ/Pulse ω 2 = 5952 cm -1 4µJ/Pulse 2ω 1 = cm -1 2ω 2 = 11904cm -1 ω 1 +ω 2 = 12517cm -1 ω=613 cm -1 A 1 (TO)mode:610cm

15 ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω a Octant I b 4 Octant IIc4 Ti:MgAl 2 O 4 ab

16 µ µ Ti:MgAl 2 O nm Mn:MgAl 2 O 4 Mn:MgAl 2 O nm

17 a Mn:MgGa 2 O 4 b Mn:MgAl 2 O 4 τ τ

18 1 2 1 N α exp = N e α α e 2 N! N N β exp = N h β β h 2 N! N αβα β ħω µ µ µ µ χ ω χ ω α

19 Γ Γω ω ω ω ω ω ω ω ω ω α α α

20 - 19 -

21 - 20 -

22 d14 d25 d36 d31 d32 d 33. d 24 d µ α

23 YCrO 3 () SHG () χ α Temperature dependence of SHG intensity measured at 600 nm and under magnetic field during cooling and heating processes

24 Schematic diagram of experimental set-up for the phase measurement of nonlinear optical coefficient

25 Fig. 4 Polarization characteristics of the SHG from quartz and YCrO 3 crystals and superposed signals at several wavelengths. Scales of the signals from single plates are reduced. Fig. 5 SHG intensity and phase of nonlinear susceptibility of YCrO 3. Solid curve indicates absorption spectrum; the SHG intensities are expressed by open squares (experimental) and dashed curve (simulated), and phase values are given by solid circles (experimental) and dotted curve (simulated)

26 ..... aab baa bbb bcc cbc..... abc bca cab aaa abb acc bab.... cca..... aca.... bbc.. caa cbb ccc... χ χ χ χ

27 Fig. 6 (top) Absorption spectrum and SHG spectra of a GaFeO 3 crystal when light incident on ac plane has polarization parallel to a-axis. (bottom) Absorption spectrum and SHG spectra of a GaFeO 3 crystal when light incident on ac plane has polarization parallel to c-axis. α

28 Fig. 7 Photoluminescence spectra for Ce-doped Al 2 O 3 and SiO 2 prepared by sol-gel method

29 Ca (0.1%):YAlO

30 Ca:YAlO nm Conduction band (Y 4d ) 365 nm luminescence 365 nm non-luminescent center luminescent center Valence band (O 2p ) YAlO

31 - 30 -

32 - 31 -

33 - 32 -

34 Fig. 1 Ce(1%)-Al 2 O 3 Fig. 2 Ce(1%)-Al 2 O 3 254nm Intensity (A.U.) Wavelength (nm) Fig. 3 Ce(1%)-Al 2 O 3 Fig

35 Fig. 5 Ce(1%)-Al 2 O 3 Fig. 6 Ce(1%)-Al 2 O 3 Fig. 7 Ce(1%)-Al 2 O 3 X Fig. 8 Ce(1%)-Al 2 O 3 X α θ α α

36 Fig. 9 Eu(1%)-Al 2 O 3 Fig. 10 Tb(1%)-Al 2 O 3 Fig. 11 Eu(1%)-Al 2 O 3 Fig. 12 Tb(1%)-Al 2 O 3 α

37 Fig. 13 Tb(0.1%)-Sc 2 O 3 Fig. 14 Tb(0.1%)-Sc 2 O 3 254nm

38 Fig. 15 Tb(0.1%)-Sc 2 O 3 Fig. 16 Tb(0.3%)-Sc 2 O 3 Sc-3d Sc-3d Sc-3d Sc-3d 4f 7 5d S.E. 4f 7 5d S.E. 4f 7 5d 4f 7 5d (i) 5 D 4 (ii) 5 D 4 (iii) 5 D 4 (iv) 5 D 4 7 F 5 S.H. 7 F 5 S.H. 7 F 5 7 F 5 O-2p 7 F 6 O-2p 7 F 6 O-2p 7 F 6 O-2p 7 F 6 Fig. 17 Tb-Sc 2 O

39 Fig. 18 Ca, Sr, BaYAlO 3 254nm EL Intensity (a. u.) Wavelength (nm) Fig. 19 E Fig

40 EL Intensity (a. u.) Wavelength (nm) Wavelength (nm) Fig. 21 Fig. 22 EL Intensity (a. u.)

41 - 40 -

42 Fig. 23Bi-2223 πσ πσ σ σ π π

43 Fig. 24 MgB 2 Fig. 25 Y

44 - 43 -

45 n-s AFI p-s

46 ρ b ( mω cm ) ρ Ω :840 Tc: a-lsco a-lsco NCCO

47 (Ω Ω mTorr Tc:10.7K a-ncco ρ Ω Ω a-ncolco p-i-n -46-

48 p-i-nv-i Nb p-ingaas n-ingaas InP /InGaAs p-n/

49 anb/p-ingaas/nbv-i bnb/n-ingaas/nbv-i a b Nb µ Nb p-in 0.53 Ga 0.47 As µ (100nm 3x10 19 cm -3 ) n-in 0.53 Ga 0.47 As (100nm 5x10 18 cm -3 ) Nb

50 ξ ξ µ Nb/InGaAs p-n/nb Ar + Ar + STO Ar

51 Ar + STOPL Ar + Ar + STOPL

52 (a)kyoto Ar + (b)kyoto Ar + n-sto/ybco n-sto/ybco

53 Al 2 O 3 :Ce Al 2 O 3 :Ce PL

54 - 53 -

55 - 54 -

56 - 55 -

57 - 56 -

58 α α α

59 - 58 -

60 δ

61 - 60 -

62 - 61 -

63 - 62 -

64 - 63 -

65 - 64 -

66 - 65 -

67 - 66 -

68 - 67 -

69 - 68 -

70 - 69 -

71 - 70 -

72 - 71 -

医系の統計入門第 2 版 サンプルページ この本の定価 判型などは, 以下の URL からご覧いただけます. このサンプルページの内容は, 第 2 版 1 刷発行時のものです.

医系の統計入門第 2 版 サンプルページ この本の定価 判型などは, 以下の URL からご覧いただけます.   このサンプルページの内容は, 第 2 版 1 刷発行時のものです. 医系の統計入門第 2 版 サンプルページ この本の定価 判型などは, 以下の URL からご覧いただけます. http://www.morikita.co.jp/books/mid/009192 このサンプルページの内容は, 第 2 版 1 刷発行時のものです. i 2 t 1. 2. 3 2 3. 6 4. 7 5. n 2 ν 6. 2 7. 2003 ii 2 2013 10 iii 1987

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