Charge Compensation Mechanism Decreases Dielectric Loss in Manganese-Doped Pb(Fe1/2Nb1/2)O3 Ceramics
スポンサーリンク
概要
- 論文の詳細を見る
Mn-doped Pb(Fe1/2Nb1/2)O3 (PFN) ceramics are synthesized by the conventional solid-state reaction method via a B-site oxide mixing route. The pure perovskite phase of Mn-doped PFN is obtained up to 0.75 mol% of manganese doping. Due to manganese doping, dielectric loss of the obtained ceramics decreases continuously up to 3 mol% of manganese, although pyrochlore phase appears. The decrease of dielectric loss can be explained by the charge compensation effect caused by the substitution of Mn4+ for Fe3+ in the octahedral cage of the perovskite structure, which is confirmed by X-ray photoelectron spectrometry (XPS). That is, due to the substitution of Mn4+ for Fe3+ ions, the relative content of iron in different valence states changes, i.e., the relative content of Fe2+ ions increases with the amount of doped manganese. Therefore, the hole-conduction mechanism caused by the partial reduction of Fe3+ to Fe2+ in the PFN system weakens, which leads to the decrease of dielectric loss. The effect of manganese doping on the depression of mechanical vibration loss also provides some contribution to the decrease of total dielectric loss through pinning down the rotation of spontaneous polarization induced by combining Mn2+ (reduced of doped Mn4+ ions during sintering) with the oxygen vacancy (produced by the compensation effect) and standing near the domain boundary. The relative dielectric constant of the Mn-doped PFN ceramics also decreases continuously with the increase of manganese content, which is believed to be related to the reduction of space-charge polarization.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-05-15
著者
-
Imoto Hideo
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
-
Fang Bijun
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
-
Shan Yuejin
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
関連論文
- Mixed-Valence Ruthenium Diphosphates with a Tunnel Structure: ARu_2(P_2O_7)_2 (A= Li, Na, Ag, and Cu) and Ru_2(P_2O_7)_2
- Selective Synthesis of Methylal on a New Crystalline SbRe_2O_6 Catalyst
- Simple synthesis of zinc sulfide and cadmium sulfide under hydrothermal conditions
- Reduction of Dielectric Losses in Pb(Fe_Nb_)O_3-Based Ferroelectric Ceramics
- Improvement of Dielectric Properties in Iron-Containing Ferroelectrics
- Charge Compensation Mechanism Decreases Dielectric Loss in Manganese-Doped Pb(Fe_Nb_)O_3 Ceramics
- Successive Change of Phase Transition Character in Lead Zinc Niobate Titanate Single Crystals
- Growth of Pb[(Zn_Nb_)_Ti_]O_3 Single Crystals Directly from Melt : Electrical Properties of Condensed Matter
- Synthesis, Structure, and Electrochemistry of a Dodecanuclear Chromium Cluster Complex 〔Cr_S_(PEt_3)_〕
- Syntheses and Structures of Trinuclear Molybdenum Cluster Complexes [Mo_3S_4Cl_4(C_5H_5N)_5] and [Mo_3S_4Cl_3(C_5H_5N)_6]I
- Synthesis and Structure of a Pyridine Complex of Trinuclear Molybdenum Cluster [Mo_3S_4Cl_4(py)_5]
- Syntheses of complex sulfides AgCuS and Ag_3CuS_2 from the elements under hydrothermal conditions(Aqueous Solution Science for Ceramic Processing II)
- Hydrothermal synthesis of Cd_3TeO_6 oxide powders
- Reversible Photodissociation of Hexacarbonyl Tungsten in Cross-Linked Polymers
- New n-Type Thermoelectric Oxide, Cd_3TeO_6 : Structure and Mechanical and Thermal Properties of Condensed Matter
- Synthesis and Structure of a Trinuclear Rhenium Cluster Complex [PEt_3H][Re_3(μ_3-S)(μ-S)_3Cl_6(PEt_3)_3]
- Synthesis of Trinuclear Rhenium Halide Sulfide Cluster Complexes with Triethylphosphine Ligands [Re_3(μ_3-S)_2(μ_2-S)_2(μ_2-Br)Br_2(PEt_3)_4]and[Re_3(μ_3-S)_2(μ_2-S)_2(μ_2-Cl)Cl_3(PEt_3)_3]
- Synthesis of a Mixed-Metal Cluster Complex of Rhenium and Nickel[Re_3NiS_4Cl_6(PEt_3)_4]
- Magnetic Field-Induced Insulator-to-Metal Transition in Perovskite Manganites Eu_Sr_xMnO_3
- Improvement of Dielectric Properties in Iron-Containing Ferroelectrics
- Syntheses, Structures, and Molecular-Orbital Calculations of Chromium Chevrel-Type Cluster Complexes [Cr_6E_8(PR_3)_6] (E=S, PR_3=PEt_3, PMe_3; E=Se, PR_3=PEt_3, PMe_3, PMe_2Ph)
- Synthesis of a Molybdenum Cluster Complex [Mo_(μ_3-S)_(μ_4-S)_2(PEt_3)_] with Chevrel Phase Type Intercluster Bondings
- Chalcogenide Cluster Complexes of Chromium, Molybdenum, Tungsten, and Rhenium
- Synthesis and Structure of SO_2 Bridged Trinuclear Re Cluster (Et_4N) [Re_3 (μ_3-S) (μ-SO_2) (μ-S)_2Cl_6(PEt_3)_3]
- Charge Compensation Mechanism Decreases Dielectric Loss in Manganese-Doped Pb(Fe1/2Nb1/2)O3 Ceramics
- Reduction of Dielectric Losses in Pb(Fe1/2Nb1/2)O3-Based Ferroelectric Ceramics
- Crystal structure of dimethyltin molybdenum tetraoxide, (CH3)2SnMoO4.