Preparation, structure and magnetic properties of a new nickel(III) oxide: YbSr3NiO6

Abstract

An investigation of the Yb,-,SrxNi04-d system has shown that no phases crystallise with a K,Ni F, structure for reaction temperatures up to 11 00 "c at 1 atm oxygen pressure, but a new phase of ideal composition YbSr3Ni06 is formed.Rietveld refinement using powder X-ray diffraction data shows that YbSr3Ni06 adopts a rhombohedra1 KdPtCI6 type structure [ R k , 2 = 6, a = 9.6851 (2) A, c = 11.0960(2) A, R,, = 2.8%], with a deficiency of scattering from the Yb site due to 11 */o Yb vacancies or possibly cation substitutions. lodometric titrations suggest an average Ni oxidation state of 3.0 + . Magnetic susceptibility data for YbSr3Ni06 between 5 and 300 K show Curie-Weiss behaviour at higher temperatures, characteristic of Yb3+ and low-spin Ni3+ with overall peff=4.63(1) pB and &, , = -29.0(1) K. A broad susceptibility maximum at 12 K may be due to one-dimensional antiferromagnetic order.

The Structure, Characterization, and Magnetic Properties of Ca4-xNixIrO6 (x = 0.25, 0.5)

“…The first example of an oxide having this structure type, Sr 4 PtO 6 , was reported by Randall and Katz [4]. Since then, there have been numerous reports of compounds that form with this interesting and compositionally flexible structure type, including Sr 4 IrO 6 [5], Sr 3 NiPtO 6 [6], Sr 3 MIrO 6 (M = Zn, Cu, Ni) [7], Sr 3 CuIrO 6 [7,8], Ca 3 CuIrO 6 [9], Sr 3 YbNiO 6 [10], Sr 3 CoPtO 6 [11], Sr 3 MRhO 6 (M = Y, Sc, In, Sm, Eu, Er, Tb, Yb, Ho, Dy) [12,13], and Ca 4 IrO 6 [14]. The members of this family of oxides exhibit a range of magnetic properties including 1-D antiferromagnetism [6,7], ferromagnetism [7], magnetic frustration [3], and more complex magnetic behavior [11].…”

A new nickel(III) oxide family: MSr3NiO6 (M = Sc, In, Tm, Yb and Lu)

“…Rietveld refinements of the MSr,NiO, structures were carried out on powder X-ray diffraction data. The starting model in space group R3c was that previously used for YbSr,NiO, [13] and is derived from the structure of Sr,Pt0,r14. 15] with M at the unique trigonal prismatic Sr site and Ni at the Pt site (Fig.…”

Zur Kristallchemie von Oxoniccolaten der Alkali‐, Erdalkali‐ und Seltenerdmetalle

“…James und Attfield berichteten 1994 über “Präparation, Struktur und magnetische Eigenschaften eines neuen Nickel(III)‐oxids”,72 dessen Zusammensetzung anhand der besetzten Punktlagen und unter Berücksichtigung des Besetzungsfaktors SOF Yb = 0.89 Sr 3 Yb 0.89 NiO 6 lautet. Polykristalline Präparate der Zusammensetzung Sr x Yb 2– x NiO 4– y (1.0 ≤ x ≤ 1.67) und Sr 3 Yb 1– x Ni y NiO 6 (0 ≤ x ≤ 0.25; 0 ≤ y ≤ 0.25) wurden aus SrCO 3 , Ni(NO 3 ) 2 · 6H 2 O und Yb 2 O 3 (vor der Einwaage auf 1000 °C erhitzt) erhalten.…”