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1. Structural and Electrical Properties of Sr2Fe0.75Co0.75Mn0.5O6-δ

   https://doi.org/10.22259/2637-5834.0601001  

   Hona, Ram Krishna; Martinson, Amara; DAzure, Alexa; Guinn, Mandy (January 2024, Open Access Journal of Chemistry)

   unknown (Ed.)

   This study introduces a novel oxygen-deficient perovskite, Sr2Fe0.75Co0.75Mn0.5O6-δ, synthesized through a solid-state reaction and thoroughly characterized by Powder XRD, SEM and direct current (DC) electrical conductivity measurements. The material, exhibiting a cubic crystal structure with the Pm3̅m space group, demonstrates intriguing electrical properties. At temperatures ranging from 25 to 400 °C, the material displays semiconductor-type conductivity, transitioning seamlessly to metallic-type conductivity from 400 to 800 °C. The deliberate incorporation of cobalt into the perovskite structure is found to be pivotal, as evidenced by a comparative analysis with its parent compound, Sr2FeMnO6-δ. This investigation reveals a substantial improvement in electrical conductivity, underscoring the significance of the partial substitution of cobalt. The tailored electrical properties of Sr2Fe0.75Co0.75Mn0.5O6-δ position it as a versatile candidate for electronic applications. 

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2. Thermal Conductivity of CaSrFe0.75Co0.75Mn0.5O6-δ

   https://doi.org/10.54963/neea.v3i1.222  

   Medicine_Cloud, Gillian; Guinn, Mandy; Krishna_Hona, Ram (January 2024, New Energy Exploitation and Application)

   CaSrFe0.75Co0.75Mn0.5O6-δ, an oxygen-deficient perovskite, had been reported for its better electrocatalytic properties of oxygen evolution reaction. It is essential to investigate different properties such as the thermal conductivity of such efficient functional materials. The thermal conductivity of CaSrFe0.75Co0.75Mn0.5O6-δ is a critical parameter for understanding its thermal transport properties and potential applications in energy conversion and electronic devices. In this study, the authors present an investigation of the thermal conductivity of CaSrFe0.75Co0.75Mn0.5O6-δ at room temperature for its thermal insulation property study. Experimental measurement was conducted using a state-of-the-art thermal characterization technique, Thermtest thermal conductivity meter. The thermal conductivity of CaSrFe0.75Co0.75Mn0.5O6-δ was found to be 0.724 W/m/K at 25 °C, exhibiting a notable thermal insulation property i.e., low thermal conductivity. 

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3. Thermal Conductivity of CaSrFe2O6-δ

   https://doi.org/10.19080/AJOP.2024.06.555685  

   Hona, Ram Krishna (January 2024, Academic Journal of Polymer Science)

   unknown (Ed.)

   The thermal conductivity of CaSrFe2O6-δ, an oxygen-deficient perovskite, is a critical parameter for understanding its thermal transport properties and potential applications in energy conversion and electronic devices. In this study, we present an investigation of the thermal conductivity of CaSrFe2O6-δ at room temperature for its thermal insulation property study. Experimental measurement was conducted using a state-of-the-art thermal characterization technique, Thermtest thermal conductivity meter. The thermal conductivity of CaSrFe2O6-δ was found to be 0.574W/m/K, exhibiting a notable thermal insulation property. 

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4. Structural and Electrochemical Properties of Type VIII Ba ₈ Ga _16−δ Sn _30+δ Clathrate (δ ≈ 1) during Lithiation

   https://doi.org/10.1021/acsami.1c07240  

   Dopilka, Andrew; Childs, Amanda; Ovchinnikov, Alexander; Zhao, Ran; Bobev, Svilen; Peng, Xihong; Chan, Candace K. (September 2021, ACS Applied Materials & Interfaces)
5. δ-Azaproline and Its Oxidized Variants

   https://doi.org/10.1021/acs.joc.9b03384  

   Elbatrawi, Yassin M.; Pedretty, Kyle P.; Giddings, Nicole; Woodcock, H. Lee; Del Valle, Juan R. (March 2020, The Journal of Organic Chemistry)