Thermochromic property of La0.8Sr0.2MnO3 thin-film material sputtered on quartz glass

Wu, Chunhua; Qiu, Jiawen; Wang, Jiebing; Xu, Min; Wang, Lanxi

doi:10.1016/j.jallcom.2010.07.112

Cited by 24 publications

(9 citation statements)

References 13 publications

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“…The fact reveals that the film samples become more prone to insulator at high temperature. Similar features have been observed by pervious authors in both single crystalline [35,37] and thin film manganites [19,21,38,39,28]. For the single crystalline samples La 1−x Sr x MnO 3 (x = 0.1, 0.175, and 0.3), it has been observed that the insulator phase sample for x = 0.1 also shows a broad peak at the same wavelength range, while the peak disappears for the sample x =0.175 and 0.3 [35].…”

Section: Resultssupporting

confidence: 89%

Temperature-dependent emissivity property in La0.7Sr0.3MnO3 films

Fan

Dai

2016

Acta Astronautica

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Thermochromic films have been deposited by magnetron sputtering technique on different substrates. The crystallinity and surface morphology of the films have been characterized. Characterization result shows that the films are of perovskite structure. Composition analysis is performed and the result indicated that the element composition of the film can be close to its stoichiometric ratio. Temperature-dependent reflectivity and emissivity are studied. Reflectivity spectra show a downward trend with increasing temperature. Emissivity of the film is large at high temperature and it decreases sharply upon cooling. The emissivity increment at 123-373 K can approach 0.43 at 1.4 Pa sputtering pressure environment, which is attractive for thermal control application in spacecraft.

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Section: Resultssupporting

confidence: 89%

Temperature-dependent emissivity property in La0.7Sr0.3MnO3 films

Fan

Dai

2016

Acta Astronautica

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“…However, conductivity is usually influenced by the morphologies and particle size of the materials. 15,16 Thus, the room temperature resistivity q of the samples was measured, which was 101.23 XÁmm, 350.23 XÁmm, and 131.2243 XÁmm, respectively, for LMO, LSrMO, and LSmMO.…”

Section: Dynamic Magnetic Propertiesmentioning

confidence: 99%

Effects of Sr2+ or Sm3+ doping on electromagnetic and microwave absorption performance of LaMnO3

Zhang

Cao

Zhang

et al. 2013

Journal of Applied Physics

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The perovskite structure La1−xSr(or Sm)xMnO3±δ (x = 0, 0.25) powders were successfully fabricated by the traditional solid state reaction method. The influences of Sr2+ or Sm3+ doping on the static and dynamic magnetic performance were investigated. The resonance phenomena could be attributed to natural resonance and exchange resonance. The substitution of Sr2+ or Sm3+ into La3+ could greatly influence the resonance frequency. Furthermore, the microwave absorption performance of LaMnO3 was improved after the incorporation of Sr2+ or Sm3+. It is obtained that Sr2+ doped LaMnO3 had superior performance compared with that of Sm3+ doped LaMnO3. The maximum reflection loss was −30.0 dB at 13.968 GHz with a thickness of 1.6 mm. The microwave absorption performance was attributed to both the dielectric and magnetic losses.

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“…In addition to the ferromagnetic property, perovskite La-Sr-Mn-O is also characteristic of thermochromic and found recently to be a promising thermal control material used in the variable-emittance devices [5][6][7]. Due to the phase-transition, the emittance of La 1-x Sr x MnO 3 compounds can change significantly with the variation of temperature, i.e., low emissivity at low temperature while high emissivity at high temperature, which makes them attractive as good thermal control materials used in the variable-emittance devices.…”

Section: Introductionmentioning

confidence: 99%

Influence of annealing on structure and thermochromic property of spark plasma sintered La1−xSrxMnO3 compounds

Wang

Shen

et al. 2015

J Mater Sci: Mater Electron

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Sr-doped lanthanum manganite (La 1-x Sr x MnO 3 ) compounds as potential thermal control materials have been prepared by spark plasma sintering followed by annealing at different temperatures. The structure, transport behavior and thermochromic property of the samples were then studied as a function of annealing. With the increasing of annealing temperature, the relative density was increased, and well-crystallized La 1-x Sr x MnO 3 compounds with a dense texture (relative density [ 98 %) were obtained after annealing at 1,273-1,373 K. The measurement of transport property showed an improvement in electrical conductivity due to the increasing of Mn 4? /Mn 3? ratio after annealing, which as a result enhanced the Mn 3? -O-Mn 4? double exchange interaction. The conduction mechanisms above the metal-insulator transition temperature (T P ) was further discussed, and we found that the small polaron hopping model could be applied in this regime. Moreover, the annealed samples tended to reduce the localization of the charge carriers and thereby a decreasing in hopping energy was observed. The infrared emissivity (e) of the La 1-x Sr x MnO 3 compounds changed with temperature and an shape change near T P was observed, which was considered to be associated with the metal-insulator transition. The thermochromic properties were also affected by annealing process, where a larger variability in emissivity (De = 0.38) was obtained for the annealed samples.

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Thermochromic property of La0.8Sr0.2MnO3 thin-film material sputtered on quartz glass

Cited by 24 publications

References 13 publications

Temperature-dependent emissivity property in La0.7Sr0.3MnO3 films

Temperature-dependent emissivity property in La0.7Sr0.3MnO3 films

Effects of Sr2+ or Sm3+ doping on electromagnetic and microwave absorption performance of LaMnO3

Influence of annealing on structure and thermochromic property of spark plasma sintered La1−xSrxMnO3 compounds

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