Charge density wave formation in R2Te5 (R=Nd, Sm, and Gd)
نویسندگان
چکیده
K. Y. Shin,1 J. Laverock,2 Y. Q. Wu,3 C. L. Condron,4 M. F. Toney,4 S. B. Dugdale,2 M. J. Kramer,3 and I. R. Fisher1,* 1Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, Stanford, California 94305, USA 2H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, United Kingdom 3Ames Laboratory and Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA 4Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, 2575 Sand Hill Road, Menlo Park, California 94025, USA Received 12 December 2007; revised manuscript received 19 February 2008; published 1 April 2008
منابع مشابه
Solution state studies on thermodynamic parameters and complexation behavior of inner transition metal ions with creatinine in aqueous and mixed equilibria
The determination of formation constants of binary inner transition metal complexes where M=Y(III) or La(III) or Ce(III) or Pr(III) or Nd(III) or Sm (III) or Gd (III) or Dy (III) or Th(IV) andL = Creatinine have been carried out using Irving–Rossotti titration technique in aqueous mediaat different temperatures and at ionic strength. To understand more about the nature ofequilibrium involving i...
متن کاملبررسی خصوصیات ژئوشیمیایی رخسارههای واحد دشتسر ( مطالعه موردی : حوزۀ آبخیز دشت یزد – اردکان )
عناصر نادر خاکی (REE) در میان عناصر کمیاب کمترین انحلال دارند و بنابراین نسبت به دیگر عناصر طی فرایند هوازدگی تحرک کمتری دارند و همچنین خصوصیات REE به طور عمده وابسته به منشأ میباشد. در این تحقیق 73 نمونه سطحی در قالب رخسارههای ژئومورفولوژی تیپهای واحد دشتسر به منظور مقایسه مقادیر REE و شاخصهای REE و اندازهگیری ترکیبات اصلی و محاسبه شاخص شیمیایی تغییر از رخسارههای مختلف جمعآوری گردید. ...
متن کاملCompound Formation and Melting Behavior in the AL? Compound and Rare Earth Oxide Systems
The compounds BeO, AlN, and Sic (AB type) belong to the family of “GrimmSommerfeld compounds.” These compounds crystallize in the same hexagonal wurtzite (84) structure. Such a structure can be considered as being composed of two interpenetrating hexagonal closepacked sublattices, one of atoms A, the other of atoms B (I, 2). A and B form interpenetrating tetrahedra ABJ and BA4, respectively. In...
متن کاملPreparation and Crystal Structures of Ternary Rare Earth Silver and Gold Arsenides LnAgAs2 and LnAuAs2 with Ln = La–Nd, Sm, Gd, and Tb
The 14 arsenides LnAgAs2 and LnAuAs2 (Ln = La–Nd, Sm, Gd, Tb) were prepared by reaction of stoichiometric mixtures of the elemental components at high temperatures and characterized by Xray diffractometry. The silver compounds LaAgAs2 and CeAgAs2 and the gold compounds LnAuAs2 (Ln = Ce–Nd, Sm, Gd, Tb) crystallize with HfCuSi2 type structure (P4/nmm, Z = 2). Of these, the structures of CeAgAs2 (...
متن کاملManganite charge and orbitally ordered and disordered states probed by Fe substitution into Mn site in LnBaMn1.96Fe0.04O5, LnBaMn1.96Fe0.04O6 and
The layered manganese oxides LnBaMn1.96Fe0.04Oy (Ln=Y, Gd, Sm, Nd, Pr, La) have been synthesized for y = 5, 5.5 and 6. In oxygen-saturated state (y = 6) they exhibit the charge and orbital order at ambient temperature for Ln=Y, Gd, Sm, but unordered eg-electronic system for Ln=La,Pr,Nd. Fourfould increase of quadrupole splitting was observed in charge and orbitally ordered manganites compared t...
متن کامل