Synthesis, Crystal Structure, and Physical Properties of the Perovskite Iridates

Abstract

Perovskite iridates have emerged as a new paradigm for studying the strongly correlated electron physics with strong spin-orbit coupling. The "113" alkaline-earth iridates AIrO 3 (A = Ca, Sr, Ba) display a rich variety of crystallographic and electronic states and are now attracting growing research interest. This chapter aims to provide an overview for these "113" iridates, including the materials' synthesis, crystal structure, major physical properties, and other interesting results such as the effects of pressure and chemical substitutions, as well as theoretical perspectives.

Iridium double perovskite Sr2YIrO6 : A combined structural and specific heat study

“…and δ = 4.36 × 10 −7 J/mol K 6 , the Debye temperature Θ D = 425.7 K was calculated. This value is comparable with those obtained for other double-perovskite materials [37,38] and iridium-based compounds [33,39].…”

Growth and engineering of perovskite SrIrO 3 thin films

“…The pseudo-cubic unit cell of the distorted orthorhombic structure yields ≈ √2 � ≈ √2 � ≈ 2 � ≈ 3.96 Å. Several groups have reported the synthesis of the polycrystalline form of Pv-SrIrO3 [15][16][17][18][19][20], and have refined the crystal structure using x-ray and neutron diffraction methods to obtain 4 insight into the crystal structure. The individual IrO6 octahedra in Pv-SrIrO3 are relatively rigid.…”

“…For Pv-SrIrO3, χ = 11.5° and φ = 8.7° at T = 300 K, and the values are independent of temperature at T ≤ 300 K [18]. The Ir-O bond length (∼2.016 Å at T = 300 K) is equal along all three directions, and the average Ir-O-Ir bond angle 〈 〉 is ∼154.1° [19].…”