Semnan University Press Innovations in Materials: Current & Future 3115-9990 1 1 2026 01 01 The Effect of Spark Plasma Sintering on Densification, Mechanical Properties, and Crystallographic Texture of LaMgAl11O19 27 36 10378 10.22075/imcf.2025.39796.1051 EN Mohammadmehdi Khorramirad Semnan-Iran Sanaz Hasanzadeh Semnan-Iran Mohammad Reza Rahimipour Ceramic Department of Materials and Energy Research Center (MERC), Karaj, Alborz, Iran Mohammad Mehdi Hadavi Department of Materials Engineering, Tarbiat Modares University, Tehran, Iran Kourosh Shirvani Department of Advanced Materials and New Energies, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran Journal Article 2025 11 22 Lanthanum Magnesium Hexaaluminate (LaMgAl11O19, LaMA) is a promising material for various applications, including thermal barrier coatings, catalysts, and optical materials, due to its unique properties such as high-temperature thermodynamic and structural stability, low thermal conductivity, and good chemical resistance. In this study, the densi-fication of synthesized LaMA powder was investigated using spark plasma sintering (SPS). The effects of SPS on the relative density, mechanical properties, and crystallographic tex-ture were evaluated. The results showed that SPS achieved a high relative density of 97.56 ± 0.25% and a flexural strength of 367± 13 MPa, which is in good agreement with the find-ings of other researchers. Remarkably, X-ray diffraction analysis revealed the development of a strong crystallographic texture in the sintered body, characterized by a significant preferential orientation of the (006) plane (Texture Coefficient = 2.82). Scanning electron microscopy confirmed microstructural rearrangement and grain growth. The formation of this textured microstructure, attributed to the preferential alignment of platelet-like grains under uniaxial pressure during SPS, is a key finding of this work and contributes to the understanding of structure-property relationships in SPS-processed hexaaluminates. https://imcf.semnan.ac.ir/article_10378_57b4d43721b640a61d5d598953c3810f.pdf