[보고서]The research of multiferroic materials by high field Massbauer spectroscopy

김철성

보고서 정보

주관연구기관

국민대학교 산학협력단

연구책임자

김철성

보고서유형

최종보고서

발행국가

대한민국

언어

한국어

발행년월

2010-10

과제시작연도

2007

주관부처

과학기술부

연구관리전문기관

한국과학재단
Korea Science and Engineering Foundtion

등록번호

TRKO201000014337

과제고유번호

1355050245

DB 구축일자

2013-04-18

키워드

고자기장 뫼스바우어 분광 시스템,스핀-전하-궤도-격자 상호작용,다강체,양자역학적 초미세 상호작용,자기적 프러스트레이션,다강체박막 기반의 NEMSHigh-field Mossbauer Spectroscopy,Spin-Charge-Orbital-Lattice coupling,Multiferroic materials,Hyperfine interaction,Magnetic frustration,NEMS based on Multiferroic thin films

$Refined X-ray diffraction patterns of LuFe2O4 powder at 300 K. Open circles represent the observed patterns; continuous lines represents calculated and difference (obs-calc) patterns. Tick marks correspond to the position of the allowed Bragg reflections.$ 표 Refined X-ray diffraction patterns of LuFe2O4 powder at 300 K. Open circles represent the observed patterns; continuous lines represents calculated and difference (obs-calc) patterns. Tick marks correspond to the position of the allowed Bragg reflections.
표 The temperature dependence of magnetization curves for LuFe2O4 powder. The circle and triangular symbols present FC and ZFC curve, respectively. The inner box is dσ/dT curve of the ZFC curve.
표 The Mössbauer spectra of LuFe2O4 powder at various temperatures.
표 The Mössbauer spectra of LuFe2O4 powder from 250 (TN) to 370 K (TCO).
표 The temperature dependence of isomer shift at various temperatures.
$X-ray diffraction patterns of YMn2-xFexO5 at room temperature. Solid circle represents the observed pattern; continuous lines represent the calculated and difference (obs.-calc.) patterns. Tick markers correspond to the position of the allowed Bragg reflections. (a) x=0.00, (b) x=0.01.$ 표 X-ray diffraction patterns of YMn2-xFexO5 at room temperature. Solid circle represents the observed pattern; continuous lines represent the calculated and difference (obs.-calc.) patterns. Tick markers correspond to the position of the allowed Bragg reflections. (a) x=0.00, (b) x=0.01.
$Refined neutron diffraction patterns of YMn2O5 at 4 K. Upper tick marks correspond to the position of the allowed Bragg reflections by crystal structure. Lower tick marks correspond to Bragg position by magnetic structure.$ 표 Refined neutron diffraction patterns of YMn2O5 at 4 K. Upper tick marks correspond to the position of the allowed Bragg reflections by crystal structure. Lower tick marks correspond to Bragg position by magnetic structure.
표 (a) Magnetic susceptibility of YMn1.99Fe0.01O5 at various temperatures. (b) The temperature dependence of dielectric constants in YMn1.99Fe0.01O5.
표 Temperature dependence of zero field cooled magnetization curves for Co0.9Zn0.1Cr1.9857Fe0.02O4 and CoCr1.9857Fe0.02O4 with 100 Oe applied fields by VSM.
표 Mössbauer specta of (a) Co0.9Zn0.1Cr1.9857Fe0.02O4 and (b) CoCr1.9857Fe0.02O4 at 4.2 K.
표 The temperature dependence of ZFC magnetization in MnCr1.9857Fe0.02O4 polycrystalline. The right-top inset demonstrates the inverse magnetic susceptibility in MnCr2O4.
표 Mössbauer specta of MgCr1.9857Fe0.02O4 at various temperatures and the solid doublet line is paramagnetic phase.
$The x-ray diffraction patterns of NiCr2−xFexO4 ( x=0.0, 0.1, 0.3, 0.5 ) at room temperature. The open circles represent the observed patterns; continuous lines represent calculated and difference obs-cal patterns. The tick marks correspond to the position of the allowed Bragg reflections.$ 표 The x-ray diffraction patterns of NiCr2−xFexO4 ( x=0.0, 0.1, 0.3, 0.5 ) at room temperature. The open circles represent the observed patterns; continuous lines represent calculated and difference obs-cal patterns. The tick marks correspond to the position of the allowed Bragg reflections.
표 (a) The ferrimagnetic Néel temperature TN and lattice constant at room temperture and (b) the temperature dependence of the zero field cooled ZFC magnetization curves for NiCr2− xFexO4 (x=0.0, 0.1, 0.3, 0.5)under the external field of 100 Oe. The inner box is dσ/dT curve of x=0.0 sample, with the arrow indicating the TN point.
표 The Mössbauer spectra of NiCr2− xFexO4 (x=0.0, 0.1, 0.3, 0.5) at room temperature.
표 The Mössbauer spectra at various temperatures for NiCr1.9Fe0.1O4.
표 XRD patterns of a) MnWO4 and b) Mn0.98Fe0.02WO4 powders measured at a room temperature.
표 Mössbauerspectra of Mn0.98Fe0.02WO4 powders measured at various temperatures.
표 Hyperfine field (Hhf), quadrupole splitting (ΔEQ), and asymmetry parameter (η) of Mn0.98Fe0.02WO4 powders measured at various temperatures.
$Results of refinement parameterslattice constants, Bragg R-factor (RB), and scale R-factor (RF) of x-ray diffraction on MnWO4 and Mn0.98Fe0.02WO4 powders.$ 표 Results of refinement parameterslattice constants, Bragg R-factor (RB), and scale R-factor (RF) of x-ray diffraction on MnWO4 and Mn0.98Fe0.02WO4 powders.
표 The parameters of Mössbauer spectra, isomer shift (δ), quadrupole splitting (ΔEQ), the ratio of electric quadrupole interaction to magnetic dipole interaction (R = e2qQ/2g1μNH), hyperfine field (Hhf), the angle between the principal axes and internal magnetic field at the nucleus (θ and φ), and asymmetry parameter (η).
$X-ray diffraction patterns of the CuFeO2 powder.$ 표 X-ray diffraction patterns of the CuFeO2 powder.
표 Mössbauer spectra of the CuFeO2 powder at various temperatures.
표 Mössbauer spectrum of CuFe0.98Al0.02O2 powder measured at 4.2 K.
표 XRD patterns of BaFe12-xMnxO19 (0≤x≤6) samples at room temperature.
표 Magnetic hysteresis loops of BaFe12-xMnxO19 (0≤x≤6) samples at room temperature.
표 The occupation number of Fe ions in the five sublattices for BaFe12-xMnxO19(0≤ x≤6).
표 Mössbauer spectra of BaFe12-xMnxO19 at room temperature.
표 Mössbauer spectra of (1-x) LiFePO4 + x FePO4 at room temperature.
표 Mössbauer spectra of (1-x)LiFePO4 + xFePO4 at 4.2 K.
표 (a) Temperature dependence of magnetic susceptibility curves for Li0.59FePO4 and (b) inversemagnetic susceptibility curves for LixFePO4.
표 The image of LiMPO4 (M=Fe, Co, Ni) single crystal grown by a flux melting method.
$X-ray diffraction patterns of LiNi0.9957Fe0.01PO4 at room temperature. Solid circle represents the observed pattern; continuous lines represent the calculated and difference (obs.-calc.) patterns. Tick markers correspond to the position of the allowed Bragg reflections.$ 표 X-ray diffraction patterns of LiNi0.9957Fe0.01PO4 at room temperature. Solid circle represents the observed pattern; continuous lines represent the calculated and difference (obs.-calc.) patterns. Tick markers correspond to the position of the allowed Bragg reflections.
표 The Mössbauer spectra of Cd1-xFexCr2S4 (0.3≤x≤0.9) at 4.2 K and [(a)-(b)] indicated Fe substitution x=0.9-0.3.
표 Temperature dependence of the zero-field cooled (ZFC) and field cooled (FC) magnetic moments for external field under 100 Oe and 5 kOe. The inset presents the inverse susceptibility.
표 Mössbauer spectra of Zn1/2Fe1/2Cr2S4 at various temperatures.
표 Results of the refinement parameters for XRD of FeCr2-xAlxS4 (x=0.1, 0.3, and 0.5)
표 Results of Mössbauer parameters of FeCr2-xAlxS4 (x=0.1, 0.3, and 0.5) at 4.2 K.
표 Lattice parameter (a0), inter-atomic distance Fe-S, M-S, Cr-S (dFe-S, dM-S , dCr-S), Debye Temperature (ΘD), and Néel temperature (TN) on FeCr2-xMxS4. (M=Al, In ; x=0.1, 0.3)
표 The temperature dependent magnetization curves for the FeCr2-xMxS4 with the external field of 5000 Oe. (M=Al; x=(a) 0.1, (b) 0.3, M=In; x= (c) 0.1, (d) 0.3 )
표 The temperature dependences of the hyperfine field (Hhf) and electric quadrupole splitting (ΔEQ) of FeCr1.9M0.1S4 (M=Al, In) at various temperatures.
표 Natural logarithm of the Mössbauer absorption area f of FeCr2-xMxS4. (M=Al, In x=0.1, 0.3)
표 Mössbauer spectra of FeSc2S4 at various temperatures.
표 Electric quadrupole splitting ΔEQ for FeSc2S4 at various temperatures. Solid circle and solid square represent ΔEQ for external line and internal line, respectively.
$Refined x-ray diffraction patterns of the Ni1-xFexGa2S4 at room temperature for (a) x=0.1, (b) x=0.5, and (c) x=0.9, respectively. The Bragg factors RB and the structure factors RF were under 5 %.$ 표 Refined x-ray diffraction patterns of the Ni1-xFexGa2S4 at room temperature for (a) x=0.1, (b) x=0.5, and (c) x=0.9, respectively. The Bragg factors RB and the structure factors RF were under 5 %.
표 Lattice parameter (a0, c0), bond lengths from Fe, Ni to S (dFe-S), magnetic hyperfine field (Hhf), electric quadrupole splitting (ΔEQ), isomer shift (δ), Curie-Weiss temperature (θW), and Néel temperature (TN) for Ni1-xFexGa2S4 (0.01 ≤ x ≤ 1).
표 Temperature dependence of inverse susceptibility χ-1 in field-cooled (FC) magnetization under 5 T and Fe concentration values dependence of frustration factor(│θW│/TN) for polycrystalline Ni1-xFexGa2S4 (0.01 ≤ x ≤ 1).
$X-ray diffraction patterns of (a)CoCr2O4/MgAl2O4 thin film, (b)CoCr2O4/MgO thin film by sputter and (c)CCO/Pt/Ti/Si/SiO2 thin film by PLD, respectively.$ 표 X-ray diffraction patterns of (a)CoCr2O4/MgAl2O4 thin film, (b)CoCr2O4/MgO thin film by sputter and (c)CCO/Pt/Ti/Si/SiO2 thin film by PLD, respectively.
표 AFM images of (a) CoCr2O4/MgAl2O4 thin film, (b)CoCr2O4/MgO thin film by sputter and (c)CCO/Pt/Ti/Si/SiO2 thin film by PLD, respectively.
표 SEM image of CoCr2O4/AAO thin film by PLD.
표 Magnetization curves for (a) CoCr2O4/MgAl2O4 thin film, (b)CoCr2O4/MgO thin film by sputter, and (c)CCO/Pt/Ti/Si/SiO2 thin film by PLD at various temperature with 1T applied fields by SQUID.
표 Temperature dependence of zero-field-cooled and field-cooled magnetization measurements for MnTe thin film grown at 400 oC with Mn : Te = 1 : 2.7 on Si(111)
표 Magnetization curves at 5 and 300 K for MnTe/Si(111) thin film.
$The x-ray diffraction patterns of Sn1-xFexO2(x=0.0,0.05,0.1,0.2and0.33) thin films and Si(100) substrate at room temperature.$ 표 The x-ray diffraction patterns of Sn1-xFexO2(x=0.0,0.05,0.1,0.2and0.33) thin films and Si(100) substrate at room temperature.
표 The x-ray refinement of Sn1-xFexO2(x=0.0,0.05,0.1,0.2and0.33) powders at room temperature.
표 FE-SEM micrograph of Sn0.67Fe0.33O2 thin film on Si(100) substrate.
표 Summary of Sn1-xFexO2 powders from XRD Rietveld refinement analysis; The synthesis parameters, lattice constant, lattice volume, Bragg factors (RB, RF), and oxygen deficiency.
표 Magnetic hysteresis loops at room temperature for Sn1-xFexO2 (x=0.1,0.2,0.33) thin films.
표 Magnetic hysteresis loops at room temperature for Sn1-xFexO2 (x=0.05,0.01) powders.

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