Superconductivity and magnetic order in RSr2Cu2.7Mo0.3O7−δ (R = Y, Pr, Gd, and Tb)

Tsay, H. L.; Shih, Chia-Chang; Chen, Y.C.; Lee, W.H.; Meen, Teen-­Hang; Yang, H. D.

doi:10.1016/0921-4534(95)00425-4

Cited by 19 publications

(19 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No cusp at superconducting transition temperature appear in the c vs. T measurement (data not shown). No magnetic anomalies are observed down to 4.2 K. These results are consistent with those observed in magnetic susceptibility measurements and those already published [13]. Fig.…”

Section: Solubility Limit Of Mo Magnetism and Superconductivity In Thesupporting

confidence: 95%

“…5 shows the superconducting transition measured at 10 Oe for two different oxygen annealed samples (sample B and sample C). The onset of the FC transition occurs at 29 K and 36 K for sample B and sample C, respectively, which are comparable with those reported previously [4,13]. As shown in Fig.…”

Section: Solubility Limit Of Mo Magnetism and Superconductivity In Thesupporting

confidence: 91%

“…So there must be some molybdenum in 5þ state (P eff of Mo 5 þ ¼1.73 m B , 4d 1 , S¼1/2) and the P eff value obtained corresponds to the Mo 5 þ ion. This is quite surprising since non magnetic Mo 6 þ has always been assumed in all previous works with this type of compounds [4][5][6]13,[15][16][17]. A very small bump is observed at 10.3 K in the FC magnetic susceptibility plot for the non superconducting as-prepared sample (sample A).…”

Section: Solubility Limit Of Mo Magnetism and Superconductivity In Thementioning

confidence: 72%

See 2 more Smart Citations

MoxCu1−xSr2YCu2Oy (0.3≤x≤1) revisited: Superconductivity, magnetism and the molybdenum oxidation state

Marik

Morán

Labrugère

et al. 2012

Journal of Solid State Chemistry

View full text Add to dashboard Cite

Section: Solubility Limit Of Mo Magnetism and Superconductivity In Thesupporting

confidence: 95%

Section: Solubility Limit Of Mo Magnetism and Superconductivity In Thesupporting

confidence: 91%

Section: Solubility Limit Of Mo Magnetism and Superconductivity In Thementioning

confidence: 72%

See 1 more Smart Citation

MoxCu1−xSr2YCu2Oy (0.3≤x≤1) revisited: Superconductivity, magnetism and the molybdenum oxidation state

Marik

Morán

Labrugère

et al. 2012

Journal of Solid State Chemistry

View full text Add to dashboard Cite

“…Moreover, the model is for ferromagnets and our materials are antiferromagnetic. Therefore, even though Tsay et al 26 and Lai et al 27 have applied the model successfully in the antiferromagnetic oxide system, we believe that this mechanism may not be applicable in our cases.…”

Section: Resultsmentioning

confidence: 83%

“…25 In the case of Gd 2 Fe 3 Si 5 , the large linear term has been suggested to be due to a two-dimensional ferromagnetic spin waves ͑where the magnon dispersion relation is proportional to q 2 , where q is the wave vector͒ or from onedimensional antiferromagnetic spin waves ͑where the magnon dispersion relation is proportional to q). 15 Tsay et al 26 and Lai et al 27 have explained the observation of a hump in the heat capacity of several Gd-based antiferromagnetic oxide compounds, on the basis of the model proposed by Fishman and Liu. 28 Fishman and Liu 28 have shown that a hump could originate in a Heisenberg ferromagnet from quantum spin fluctuations induced by a transverse degree of freedom.…”

Section: Resultsmentioning

confidence: 99%

Low-temperature heat-capacity studies ofR2Ni3Si5
Mazumdar
¹
,
Ghosh
²
,
Nagarajan
³

et al. 1999
Phys. Rev. B
19
0
4
0
View full text Add to dashboard Cite

We report here our low temperature (2Ϫ30 K) heat capacity, C p measurements of R 2 Ni 3 Si 5 (R ϭPr, Nd, Sm, Gd-Ho). Large peaks in heat capacity data at magnetic transition temperatures (T N ) confirm the bulk nature of magnetic order in these compounds. In Nd 2 Ni 3 Si 5 , Gd 2 Ni 3 Si 5 , and Dy 2 Ni 3 Si 5 , magnetization studies indicated only one magnetic transition, whereas, heat-capacity data show two transitions. T N of the heavier rare-earth member, Tb 2 Ni 3 Si 5 , showing significant deviation from de Gennes scaling is notable. Magnetic entropy, ⌬S, estimated from heat-capacity data suggest that the magnetic ground state is a doublet in R 2 Ni 3 Si 5 (RϭPr, Nd, Sm, Dy, Ho) and a quartet in Tb 2 Ni 3 Si 5 . In all the cases, ⌬S, at T N is slightly less than that expected due to the suggested states, which we attribute to the occurrence of precursor effects of magnetic order above T N . Except for Gd 2 Ni 3 Si 5 , ⌬S of the compounds does not reach the saturation limit of R ln(2Jϩ1) even at 30 K, indicating the presence of crystalline electric field ͑CEF͒ effects. A hump in C p is observed below T N in Gd 2 Ni 3 Si 5 which is interpreted in terms of a possible amplitude-modulated magnetic spin structure. ͓S0163-1829͑99͒12605-5͔

show abstract

Interface State Luminescence and Sub‐Bandgap Absorption Based on CuGaO₂ Nanoplates/ZnO Nanowires Heterostructure Arrays

Wang

et al. 2018

Physica Status Solidi (b)

View full text Add to dashboard Cite

In this paper, the vertical arrays of ZnO nanowires (NWs) are uniformly grown on the surface of hexagonal CuGaO2 (CGO) nanoplates (NPs) through the hydrothermal method, forming the high‐density p–n heterojunction. The photoluminescence (PL) properties of these hetero‐assembled structures are characterized, and an obvious ultraviolet (UV) emission centered at 392.32 nm has been observed. Compared with the PL spectra of pure ZnO NWs, the UV peak red‐shift occurred and the spectrum broadened almost 2.5 times. A new emission located at 398 nm is attributed to the interface recombination which has been found through the Gaussian fitting. Furthermore, a red‐shift also appears in the absorption spectra of CGO NPs/ZnO NWs heterostructure, and the variation of light absorption properties results from the sub‐bandgap absorption effect in the p–n junction region. The light emission and absorption mechanisms occurring at the heterojunction have been investigated in terms of energy band theory. This work offers a new insight to realize micro/nano optoelectronic devices based on p‐CGO NPs/n‐ZnO NWs hetero‐assembled structures.

show abstract

Superconductivity and magnetic order in RSr2Cu2.7Mo0.3O7−δ (R = Y, Pr, Gd, and Tb)

Cited by 19 publications

References 31 publications

MoxCu1−xSr2YCu2Oy (0.3≤x≤1) revisited: Superconductivity, magnetism and the molybdenum oxidation state

MoxCu1−xSr2YCu2Oy (0.3≤x≤1) revisited: Superconductivity, magnetism and the molybdenum oxidation state

Low-temperature heat-capacity studies ofR2Ni3Si5
Mazumdar
¹
,
Ghosh
²
,
Nagarajan
³

et al. 1999
Phys. Rev. B
19
0
4
0
View full text Add to dashboard Cite

Interface State Luminescence and Sub‐Bandgap Absorption Based on CuGaO₂ Nanoplates/ZnO Nanowires Heterostructure Arrays

Contact Info

Product

Resources

About

Superconductivity and magnetic order in RSr2Cu2.7Mo0.3O7−δ (R = Y, Pr, Gd, and Tb)

Cited by 19 publications

References 31 publications

MoxCu1−xSr2YCu2Oy (0.3≤x≤1) revisited: Superconductivity, magnetism and the molybdenum oxidation state

MoxCu1−xSr2YCu2Oy (0.3≤x≤1) revisited: Superconductivity, magnetism and the molybdenum oxidation state

Low-temperature heat-capacity studies ofR2Ni3Si5Mazumdar1, Ghosh2, Nagarajan3 et al. 1999Phys. Rev. B19040View full textAdd to dashboardCite

Interface State Luminescence and Sub‐Bandgap Absorption Based on CuGaO2 Nanoplates/ZnO Nanowires Heterostructure Arrays

Contact Info

Product

Resources

About

Low-temperature heat-capacity studies ofR2Ni3Si5
Mazumdar
¹
,
Ghosh
²
,
Nagarajan
³

et al. 1999
Phys. Rev. B
19
0
4
0
View full text Add to dashboard Cite

Interface State Luminescence and Sub‐Bandgap Absorption Based on CuGaO₂ Nanoplates/ZnO Nanowires Heterostructure Arrays