X-RAY DIFFRACTION AND INFRARED INVESTIGATION OF RBA(2)CU(3)O(7) AND R(0.5)PR(0.5)BA(2)CU(3)O(7) COMPOUNDS (R=Y AND LANTHANIDES)

Chryssikos GD.; Kapoutsis JA.; Patsis AP.; Psycharis V. Koufoudakis A.; Mitros C.; Kallias G.; Gamariseale E.; Niarchos D.; Kamitsos EI.

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X-RAY DIFFRACTION AND INFRARED INVESTIGATION OF RBA(2)CU(3)O(7) AND R(0.5)PR(0.5)BA(2)CU(3)O(7) COMPOUNDS (R=Y AND LANTHANIDES)

机译：RBA（2）CU（3）O（7）和R（0.5）PR（0.5）BA（2）CU（3）O（7）化合物（R = Y和镧系元素）的X射线衍射和红外光谱研究

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RBa(2)Cu(3)O(7) and [R(0.05)Pr(0.5)]Ba2Cu3O7 compounds with R=Y and lanthanides have been prepared and studied at ambient temperature by means of XRD and infrared-reflectance spectroscopy. In Pr free compounds, increasing the Shannon radius of R, r(R), leaves the puckering of the Cu(2)-O(2, 3) sheet unaffected. In the Pr containing compounds, the Pr-O coordination polyhedron is typical of R(+3) ions in eight-fold coordination and argues against differentiating Pr in terms of valence or hybridization. Instead, a repositioning of Ba within the cuprate block is observed, leading to the flattening of the sheet and the anomalously high frequency of the Ba and Cu(7)-O(2, 3) B-1u modes. In R-Pr compounds the c-axis and the interplanar distances related to the position of Pa and O(2, 3) are found to exhibit a sigmoidal dependence on r(R). It is argued that this sigmoidal dependence is related to the two-mode behavior exhibited by several phonon modes of these compounds. [References: 47]

机译：RBa（2）Cu（3）O（7）和具有R = Y和镧系元素的[R（0.05）Pr（0.5）] Ba2Cu3O7化合物已经制备，并在室温下通过XRD和红外反射光谱法进行了研究。在不含Pr的化合物中，增加R的Shannon半径r（R），使Cu（2）-O（2，3）薄板的起皱不受影响。在含Pr的化合物中，Pr-O配位多面体是R（+3）离子的典型八倍配位形式，并反对在价键或杂化方面区分Pr。取而代之的是，观察到Ba在铜酸盐块中的重新定位，从而导致薄片变平以及Ba和Cu（7）-O（2，3）B-1u模式的异常高频率。在R-Pr化合物中，发现与Pa和O（2，3）的位置有关的c轴和晶面距离表现出对r（R）的S形依赖性。据认为，这种S形依赖性与这些化合物的几种声子模式所表现出的双模式行为有关。 [参考：47]

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《Physica, C. Superconductivity and its applications》 |1995年第2期|共19页
作者
Chryssikos GD.; Kapoutsis JA.; Patsis AP.; Psycharis V. Koufoudakis A.; Mitros C.; Kallias G.; Gamariseale E.; Niarchos D.; Kamitsos EI.;
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正文语种 eng
中图分类超导电性;
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Superconducting cuprate perovskites; High-tc superconductors; Normal-state properties; Neutron-diffraction; Y1-xprxba2cu3o7-delta system; Lattice-vibrations; Powder diffraction; Raman-spectra; Yba2cu3o7-delta; Pr;

机译：超导铜酸盐钙钛矿;高-tc超导体;常态性能;中子衍射;Y1-xprxba2cu3o7-δ体系;晶格振动;粉末衍射;拉曼光谱;Yba2cu3o7-δ;Pr;

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1. X-RAY DIFFRACTION AND INFRARED INVESTIGATION OF RBA(2)CU(3)O(7) AND R(0.5)PR(0.5)BA(2)CU(3)O(7) COMPOUNDS (R=Y AND LANTHANIDES) [J] . Chryssikos GD., Kapoutsis JA., Patsis AP., Physica, C. Superconductivity and its applications . 1995,第1a2期

机译：RBA（2）CU（3）O（7）和R（0.5）PR（0.5）BA（2）CU（3）O（7）化合物（R = Y和镧系元素）的X射线衍射和红外光谱研究
2. EPR STUDY OF LOCALIZED CU2+ PARAMAGNETIC IONS AND CU2+ PAIRS IN THE OXYGEN-DEFICIENT PRBA2CU3O6+X AND PR(0.5)R(0.5)BA(2)CU(3)O(6+X) (R=Y,ER) COMPOUNDS [J] . Likodimos V., Palios G., Koufoudakis A., Physical Review, B. Condensed Matter . 1995,第10期

机译：缺氧PRBA2CU3O6 + X和PR（0.5）R（0.5）BA（2）CU（3）O（6 + X）（R = Y，ER）化合物中局部CU2 +顺磁性离子和CU2 +对的EPR研究
3. Investigations of the Spin Hamiltonian Parameters for the Cu~(2+) Sites in PrBa_2Cu_3O_(6+x) and Pr_(0.5)Er_(0.5)Ba_2Cu_3O_(6+x) [J] . H. M. Zhang, S. Y. Wu, X. F. Wang, Journal of Superconductivity and Novel Magnetism . 2010,第5期

机译：PrBa_2Cu_3O_（6 + x）和Pr_（0.5）Er_（0.5）Ba_2Cu_3O_（6 + x）中Cu〜（2+）位的自旋哈密顿量参数研究
4. Investigation of Cobait-free Cathode Material Ba_(0.5)Sr_(0.5)Fe_(0.5)Cu_(0.2)O_(3-?) for Micro-tubular SOFG with Asymmetric Structure Anode [C] . Xiaozhen Zhang, Yongqing Wang, Jing Zhang International Workshop on Materials for Energy Conversion and Storage . 2012

机译：具有不对称结构阳极的微管状SOFG的微管 - 无细胞阴极材料BA_（0.5）SR_（0.5）CU_（0.5）CU_（0.2）O_（3-α）的研究
5. An X-ray diffraction investigation of lanthanum(1-x) strontium(x) manganite (x = 0.55) and lanthanum(1-x) barium(x) manganite (x = 0.5, 0.52) under an applied magnetic field. [D] . Hoffmann, Christopher Alan. 2010

机译：在外加磁场下对镧（1-x）锶（x）锰（x = 0.55）和镧（1-x）钡（x）锰（x = 0.5，0.52）的X射线衍射研究。
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机译：固态时效期间Sn-3.0Ag-0.5Cu焊料与FeCoNiCrCu0.5衬底之间的界面处（FeCrCoNiCu）Sn2金属间化合物的生长受到抑制
7. Intermetallic compounds formed during the reflow and aging of Sn-3.8Ag-0.7Cu and Sn-20In-2Ag-0.5Cu solder ball grid of Sn-3.8Ag-0.7Cu and Sn-20In-2Ag-0.5Cu solder ball grid array packages [O] . M. D. Cheng, S. Y. Chang, S. F. Yen, 2004

机译：在Sn-3.8Ag-0.7Cu和Sn-20英寸-2Ag-0.5Cu焊球栅格的回流和老化期间形成的金属间化合物在SN-3.8AG-0.7CU和SN-20IN-2AG-0.5CU焊球栅格阵列套件
8. Influence of calcium on transport properties, band spectrum and superconductivity of YBa2Cu3O(y) and YBa(1.5)La(0.5)Cu3O(y) [R] . Gasumyants, V. E., Vladimirskaya, E. V., Patrina, I. B. 1995

机译：钙对YBa2Cu3O（y）和YBa（1.5）La（0.5）Cu3O（y）的输运性质，谱带和超导电性的影响

X-RAY DIFFRACTION AND INFRARED INVESTIGATION OF RBA(2)CU(3)O(7) AND R(0.5)PR(0.5)BA(2)CU(3)O(7) COMPOUNDS (R=Y AND LANTHANIDES)

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