ACuO2 (A: alkaline earth) crystallizing in a layered structure

Takano, Mikio; Takeda, Yasuo; Okada, Hiroshi; Miyamoto, Miyuki; Kusaka, Teiji

doi:10.1016/s0921-4534(89)80007-3

Cited by 242 publications

(104 citation statements)

References 8 publications

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“…For example the quasi-1D structure of SrCuO 2 (characterized by double Cu-O chains) can be transformed to a 2D-structure (with CuO 2 sheets) at 3 GPa and 900 • C [19].…”

Section: Structural Transformations Induced By Different Bond Compresmentioning

confidence: 99%

High Pressure and Chemical Bonding in Materials Chemistry

Demazeau

2006

Zeitschrift Für Naturforschung B

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Materials chemistry under high pressures is an important research area opening new routes for stabilizing novel materials or original structures with different compositions (oxides, oxoborates, nitrides, nitridophosphates, sulfides,...).Due to the varieties of chemical compositions and structures involved, high pressure technology is also an important tool for improving the investigations on chemical bonding and consequently the induced physico-chemical properties.Two different approaches can be described: (i) the chemical bond is pre-existing and in such a case, high pressures lead to structural transformations, (ii) the chemical bond does not exist and high pressures are able to help the synthesis of novel materials. In both cases the condensation effect (∆V < 0 between precursors and the final product) is the general rule. In addition, through the improvement of the reactivity, high pressures can lead to materials that are not reachable through other chemical routes.

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“…For example the quasi-1D structure of SrCuO 2 (characterized by double Cu-O chains) can be transformed to a 2D-structure (with CuO 2 sheets) at 3 GPa and 900 • C [19].…”

Section: Structural Transformations Induced By Different Bond Compresmentioning

confidence: 99%

High Pressure and Chemical Bonding in Materials Chemistry

Demazeau

2006

Zeitschrift Für Naturforschung B

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“…The average c-axis lattice parameter estimated from the zeroth order satellite peak positions is plotted as a function of the SCO thickness (m) in the SLs in Fig. 2 A and c ¼ 3:432 A) [20] for m ! 8.…”

mentioning

confidence: 99%

Experimental Evidence for Oxygen Sublattice Control in Polar Infinite LayerSrCuO2

et al. 2013

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“…The reported value for La 2 CuO 4 at room temperature is ³14 (in which magnetic contribution is ³10) and ³4 W/(m·K) in in-plane (CuO 2 layer) and through-plane direction, respectively. 21) On the other hand, CuO 2 layer distances for La 2 CuO 4 and SrCuO 2 are 0.66 22) and 0.34 2) nm, respectively, which means that the SrCuO 2 has twice the number of spin thermal conductivity layers compared with the La 2 CuO 4 . Consequently, we expect that the in-plane value for SrCuO 2 reaches 2030 W/(m·K) while the through-plane value is limited to ³4 W/(m·K).…”

Section: ¹1mentioning

confidence: 99%

Post-annealing effects in two-dimensional spin system SrCuO<sub>2</sub> sputtered on glass substrate

Takahashi

Terakado

Yamazaki

et al. 2017

J. Ceram. Soc. Japan

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We prepared SrCuO 2 thin film by radio-frequency magnetron sputtering on glass substrate and have investigated its postannealing effects on structure and thermal conductivity. The as-sputtered film belongs to two-dimensional spin system SrCuO 2 , namely, layer-type SrCuO 2 , which has a possibility of exhibiting high, anisotropic thermal conductivity by magnetic excitation of the spins. It was found that the as-sputtered film has (001)-orientation in which the spin layers are parallel to the surface of substrate and that post-annealing results in enhancement of crystallinity of the film such as disappearance of grain boundaries, which can cause an increase in thermal conductivity.©2017 The Ceramic Society of Japan. All rights reserved.Key-words : SrCuO 2 , Sputtering, Thermal conductivity, Low-dimensional spin system, Active control of heat flow [Received December 25, 2016; Accepted February 21, 2017] The layer-type SrCuO 2 , which has been well known as a parent material of cuprate high-temperature superconductors, 1) has unique structure and characteristics:2),3) It contains alternativelystacked Sr and CuO 2 infinite layers. The CuO 2 layer exhibits a two-dimensional arrangement of antiferromagnetically-coupled spins of S = 1/2 in Cu 2+ , referred to as spin layers. Moreover, the spin structure is expected to yield high thermal conductivity parallel to the layers by the magnetic excitation. However, researches on the crystal have been limited to those concerning high-pressure synthesis and epitaxial growth on single crystal substrate. This is because the crystal belongs to a high pressure phase and accordingly is instable in ambient air.

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ACuO2 (A: alkaline earth) crystallizing in a layered structure

Cited by 242 publications

References 8 publications

High Pressure and Chemical Bonding in Materials Chemistry

High Pressure and Chemical Bonding in Materials Chemistry

Experimental Evidence for Oxygen Sublattice Control in Polar Infinite LayerSrCuO2

Post-annealing effects in two-dimensional spin system SrCuO<sub>2</sub> sputtered on glass substrate

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