en گروه سرامیک Ceramic Materials and Engineering Research Paper Research Paper <span style="font-size:12pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black">This study investigates the effect of SnO₂ as an additive on the structural, electrical, optical, and gas sensing properties of LaCrO₃ nanoparticles.&nbsp; SnO₂ is added into the LaCrO₃ by weight percentage (1 wt. %, 3 wt. %, 5 wt. %, 7 wt. %, 9 wt. % and 11 wt. %) employing screen printing method. Initially, the nanoparticles of SnO₂and LaCrO₃ separately synthesis by sol-gel method and then used for the development of thick films. LaCrO₃ is used as host material while SnO₂is additive material. The structural characterizations like FESEM, EDX and XRD were carried out to investigate the morphology, elements and crystallite size respectively. The inclusion of SnO₂modifies the crystalline structure and surface morphology of LaCrO_3, as revealed by structural analyses. The optical characterizations like FTIR and UV were used for the study of impact of SnO₂additive on functional group and band gap of the host material respectively. Optical studies indicate a modification in the bandgap, affecting light absorption properties and indicating changes in electronic transitions. The electrical characterizations were conducted by using half bridge method. Electrical resistivity measurements show enhanced performance, likely due to variation in charge carrier mobility induced by the SnO₂additive. Among other selected wt. % SnO₂additives, 9 wt. % SnO₂added LaCrO₃ thick films shows maximum sensitivity to CH₄ gas at 120^oC operating temperature. The gas sensing characteristics demonstrate enhanced sensitivity, selectivity, and response time to target gases, suggesting that SnO₂doping improves the sensing capabilities of LaCrO₃ nanoparticles, making them more efficient as a gas sensor. Obtained findings suggest that, SnO₂as an additive enhances the multifunctional properties of LaCrO₃ nanoparticles, making them promising candidates for advanced gas sensing applications.</span></span></span></span><br> &nbsp; ,Additive,sol-gel,weight percentage,morphology crystalline structure,nanoparticles 12 31 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-5563-1&slc_lang=en&sid=1 Uglal Pandit Shinde upshinde1965@gmail.com 1800319475328460021115 1800319475328460021115 No Research Centre in Electronic Science, Mahatma Gandhi Vidyamandir’s Loknete Vyankatrao Hiray Arts, Science and Commerce College, Panchavati, Nashik-03, Affiliated to SPPU, Pune, Maharashtra-422003, India Somnath Bhika Handge somnathhandge@gmail.com 1800319475328460021116 1800319475328460021116 Yes Research Centre in Electronic Science, Mahatma Gandhi Vidyamandir’s Loknete Vyankatrao Hiray Arts, Science and Commerce College, Panchavati, Nashik-03, Affiliated to SPPU, Pune, Maharashtra - 422003, India. Dharma Kisan Halwar halwardk9@gmail.com 1800319475328460021117 1800319475328460021117 No Research Centre in Electronic Science, Mahatma Gandhi Vidyamandir’s Loknete Vyankatrao Hiray Arts, Science and Commerce College, Panchavati, Nashik-03, Affiliated to SPPU, Pune, Maharashtra - 422003, India.