Magnetic and calorimetric studies on ordered perovskite Ba2ErRuO6

General study on the crystal, electronic and band structures, the morphological characterization, and the magnetic properties of the Sr 2 DyRuO 6 complex perovskite

“…In Ba 2 ErRuO 6 , an anomaly at T=40 K related to an antiferromagnetic ordering of Ru 5+ ions appears [28], while Ba 2 HoRuO 6 shows two transitions at T=50 K and T=22 K because of an antiferromagnetic ordering of the Ru 5+ ions and a magnetic interaction between Ho 3+ ions, respectively, and Ba 2 HoIrO 6 presents paramagnetic behaviour down to T=1.8 K [29].…”

Crystal structures and magnetic properties of double perovskite compounds Ca2LnRuO6 (Ln=Y, La–Lu)

“…E-mail address: chi phone726@ybb.ne.jp (C. Sakai). sents a rare earth ion [1][2][3][4]. The electronic structure of Ru 5+ is [Kr]4d 3 (krypton electronic core [Kr]).…”

“…Such highly oxidized cations from the second or third transition series sometimes show quite unusual magnetic behavior. So, the double perovskites Ba 2 LnRuO 6 [1,2,5] and Sr 2 LnRuO 6 [3][4][5][6] show interesting magnetic properties at low temperatures. Now, our attention has been focused on double perovskite oxides in which A cation is Ca, Ca 2 LnRuO 6 .…”

Antiferromagnetic transitions of osmium-containing rare earth double perovskites Ba2LnOsO6 (Ln=rare earths)

“…Such highly oxidized cations from the second or third transition series sometimes show quite unusual magnetic behavior. Any of the double perovskites Ba 2 LnRuO 6 (Ln = La ~ Lu) [2,4,5,[9][10][11][12] and Sr 2 LnRuO 6 (Eu ~ Lu) [3,4,[6][7][8][12][13][14] show an antiferromagnetic transition at low temperatures, and the transition temperature is higher than that for the compounds in which the magnetic ion at the B site is Ru 5+ ion only. Among them, the transition temperature for Ba 2 PrRuO 6 is astonishingly as high as 117 K [10], and Ba 2 NdRuO 6 transforms to the antiferromagnetic state at 57 K [9].…”

“…Not the A site ions but the B site ions normally determine the physical properties of the perovskites [1] The solid-state chemistry of such mixed-metal oxides containing platinum group metals has attracted a great deal of interest. The preparation, crystal structures and magnetic properties of double perovskite oxides containing Ru ion, A 2 LnRuO 6 (A = alkali-earth metals), where Ln represents a rare earth ion, have been studied [2][3][4][5][6][7][8][9][10][11][12][13][14]. The electronic configuration of Ru 5+ is…”