2006
DOI: 10.1134/s0031918x06080138
|View full text |Cite
|
Sign up to set email alerts
|

Spinodal decomposition of the nonstoichiometric YBa2Cu3O7−δ compound at room temperature

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
2

Citation Types

3
2
0

Year Published

2008
2008
2023
2023

Publication Types

Select...
7

Relationship

2
5

Authors

Journals

citations
Cited by 10 publications
(5 citation statements)
references
References 7 publications
3
2
0
Order By: Relevance
“…The spinodal fluctuation generally refers to one parent phase decomposing into two immiscible coexisting phases in the absence of a nucleation barrier, which has long been considered as an approach to construct regularly fluctuating chemistries at the nanoscale. , This phenomenon is expected to open prospects for novel self-assembled, well-ordered nanostructured thin films for RRAM devices, and more critically, it holds great potential in the platform of perovskite oxides, whose broad miscibility of different cations inherently permits a prerequisite for spinodal decomposition. , To our knowledge, two key factors contribute to the occurrence of spinodal decomposition: on the one hand, as the inevitable volatilization of Bi during high-temperature synthesis, the stoichiometry cannot be ideally transferred from the target to the deposited thin film, and thus, a thermodynamically unstable chemical ratio is presumably obtained under the given condition, which favors the emergence of two equilibrium phases with close compositions. A similar phenomenon has been reported in the nonstoichiometric YBa 2 Cu 3 O 7−δ compound . On the other hand, the growth dynamics dominated by the deposition rate plays an essential role in the phase stabilization.…”
Section: Introductionsupporting
confidence: 80%
See 1 more Smart Citation
“…The spinodal fluctuation generally refers to one parent phase decomposing into two immiscible coexisting phases in the absence of a nucleation barrier, which has long been considered as an approach to construct regularly fluctuating chemistries at the nanoscale. , This phenomenon is expected to open prospects for novel self-assembled, well-ordered nanostructured thin films for RRAM devices, and more critically, it holds great potential in the platform of perovskite oxides, whose broad miscibility of different cations inherently permits a prerequisite for spinodal decomposition. , To our knowledge, two key factors contribute to the occurrence of spinodal decomposition: on the one hand, as the inevitable volatilization of Bi during high-temperature synthesis, the stoichiometry cannot be ideally transferred from the target to the deposited thin film, and thus, a thermodynamically unstable chemical ratio is presumably obtained under the given condition, which favors the emergence of two equilibrium phases with close compositions. A similar phenomenon has been reported in the nonstoichiometric YBa 2 Cu 3 O 7−δ compound . On the other hand, the growth dynamics dominated by the deposition rate plays an essential role in the phase stabilization.…”
Section: Introductionsupporting
confidence: 80%
“…A similar phenomenon has been reported in the nonstoichiometric YBa 2 Cu 3 O 7−δ compound. 23 On the other hand, the growth dynamics dominated by the deposition rate plays an essential role in the phase stabilization. Daruka and Tersoff demonstrated the dynamics of thin-film growth by vapor deposition and theoretically predicted that spinodal decomposition can occur if the deposition rate is appropriate.…”
Section: ■ Introductionmentioning
confidence: 99%
“…Since the ordering process in this compound is accompanied by decomposition, this explains why pronounced APBs are not observed in the superstructural reflection of the ordered phase, which will be less energetically favorable compared to the separation-matrix interfaces. © structure in the form of "worms" is similar to the classical modulated structure that occurs during concentration separation, resulting from stress fields, indicating local la ice distortions [37]. Moreover, the X-ray diffraction pa ern of the sample (Figure 3) suggests the possibility of the presence of two phases of different composition, and structural metastability, as already mentioned, is an inherent property of Heusler alloys.…”
Section: Structural Studiessupporting
confidence: 63%
“…© structure in the form of "worms" is similar to the classical modulated structure that occurs during concentration separation, resulting from stress fields, indicating local lattice distortions [37]. Moreover, the X-ray diffraction pattern of the sample (Figure 3) suggests the possibility of the presence of two phases of different composition, and structural metastability, as already mentioned, is an inherent property of Heusler alloys.…”
Section: Structural Studiessupporting
confidence: 63%
“…Moreover, at t ≤ 350°C, in the presence of atmospheric moisture, this compound decomposes into phases with different oxygen contents [4][5][6]. Due to splitting of Cu-O chains, the presence of water in the structure of YBa 2 Cu 3 O y leads to the formation of stacking faults with a thickness of 1.2-2.4 nm [1][2][3].…”
Section: Introductionmentioning
confidence: 99%