Role of anions and chemical bond in the metallic inorganic compounds

金属无机化合物中阴离子和化学键的作用

• 批准号: 07404054
• 负责人: KOSUGE Koji
• 金额: $ 1.66万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07404054/
• 关键词: vabadium chalcogenides; chamical transport; nuclear magnetic resonance; CaRuO_3; SrRuO_3; Invar effect

(A)Investigation of vanadium chalcogenides(1)We tried to grow the single crystals of vanadium chalcogenides V_3X_4, V_5X_8 (X=S,Se) by a chemical transport methods using of TeCl_2, I_2, HCl and Cl_2 as transport agents.The infrared arc furnace was used for these experiment. As a result, it was confirmed that I_2 as a transport agent is most adequate to get a larger good single crystal. For example, we got a single crystal of V_5S_8 with the dimension 5*5*1mm.(2)Measurement of magnetizatio process of V_5S_8 single crystal was done under the high magnetic field up to 50T,which showed two step magnetization. The paper on this experiment with the detailed discussion is now contributing.(3)And also NMR (nuclear magnetic resonance) measurement on ^<51>V of V_5S_8 is under investigation(B)Investigation of (Sr_<1-x>Ca_x) RuO_3 with the perovskite structure.Both of CaRuO_3 and SrRuO_3 have the perovskite-type structure and show a metallic behavior. The former is paramagnetic down to 1.2K and the latter shows a phase transtition to ferromagnetic at 150K.The characteristics of the solid solution (Sr_<1-x>Ca_x) RuO_3 is in the behavior of thermal expansion (sigma). The sigma of CaRuO_3 can ve fitted by a Debye function. On the other hand, the sigma of SrRuO_3 ahows "Invar effect" below T_c, that is, independent on temperature. This is a first discovery of Invar Oxides, which may be closely related to electron correlation. The paper has been published in Phys. Rev.B.

（a）研究粉谷岩（1），我们试图通过使用TECL_2，I_2，I_2，HCl和Cl_2的化学传输方法来种植辣椒剂V_3X_4，V_5X_8（X = S，SE）的单晶。结果，可以证实I_2作为运输代理最适合获得更大的良好单晶。例如，我们获得了一个v_5s_8的单晶，尺寸为5*5*1mm。（2）在高达50t的高磁场下完成了V_5S_8的磁化过程的测量，这显示了两个步骤磁化。该实验的论文和详细讨论的论文现在正在促成。（3）以及V_5S_8的 ^<51> V上的NMR（核磁共振）测量正在研究（b）研究（b）研究（sr_ <1-x> ca__x）ruo_3，ruo_3 ruo_3与perovskite结构。金属行为。前者是顺磁降至1.2k，后者显示了150k处的铁磁相的相位，固体溶液（SR_ <1-x> ca_x）ruo_3的特征与热膨胀的行为（Sigma）。 Caruo_3的Sigma可以通过Debye功能拟合。另一方面，srruo_3的sigma在t_c以下（即温度独立）下方的“变形效应”。这是不氧化氧化物的第一个发现，它可能与电子相关性密切相关。该论文已发表在Phys。 Rev.B。

项目成果

H.Kageyama: "TN Dependence on Hole Concentration in the La_<2-x>Sr_xCuO_<4+delta> System" J.Phys.Soc.Jap.64(6). 2144-2146 (1995)

H.Kageyama：“La_<2-x>Sr_xCuO_<4 delta> 系统中TN 对空穴浓度的依赖性”J.Phys.Soc.Jap.64(6)。

H. Kageyama: "TN Dependence on Hole Concentration in the La_<2-X>Sr_XCuO_<4+δ>System" J. Phys. Soc. Jpn.64. 2144-2146 (1995)

H. Kageyama：“La_<2-X>Sr_XCuO_<4+δ>系统中的TN依赖性”J. Phys. 2144-2146 (1995)。

K.Yoshimura: "Coulometric Determinations of Valence of Metal Ions.and Oxygen Content in YBa_2 (Cu_<1-x>T_x) _3 O_y (T=Fe,Co and Ni)" Proceedings (ISS'96),Advances in Superconductivity,IX. 1. 377-380 (1997)

K.Yoshimura：“YBa_2 (Cu_<1-x>T_x) _3 O_y (T=Fe,Co 和 Ni) 中金属离子价态和氧含量的库仑测定”论文集 (ISS96)，超导进展，

H.Kageyama: "Synthesis and magnetic properties of new series of one-dimensional oxides Ca_3Co_<1+x>B_<1-x>O_6 (B=Ir,Ru)" J.Solid State Chem.印刷中.

H.Kageyama：“新型一维氧化物 Ca_3Co_<1+x>B_<1-x>O_6 (B=Ir,Ru) 系列的合成和磁性能”J.Solid State Chem。

H.Kageyama: "Synthesis and magnetic properties of new series of one-dimensional oxides Ca_3Co_<1+x>B_<1-x>O_6 (B=Ir, Ru)" J.Solid State Chem. (in press). (1997)

H.Kageyama：“新系列一维氧化物Ca_3Co_<1 x>B_<1-x>O_6 (B=Ir, Ru)的合成和磁性能”J.Solid State Chem。