eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences August 2025 37 3 20 28 http://dx.doi.org/10.22147/jusps-B/370301 1546 article RAHUL SINGH 1 V.P. SRIVASTAVA 1 Department of Physics, St. Andrewu2019s College, Gorakhpur (India) <p style="text-align:justify">Rare earth elements are the most important elements due to their special material properties. In this review article, we aim to highlight the importance of Rare-earth elements. These are used in smartphones, digital cameras, computer hard disks, light-emitting diodes (LEDs), computer monitors, flat-screen televisions, and electronic displays. It is used in the ceramic and glass industry for high-temperature materials for polishing, coating, decolouring, etc. They are also used as a permanent magnet, in X-ray tubes, as phosphors in colour television, for clean energy, and in defence technology</p> https://ultraphysicalsciences.org/paper/1546/ Rare-earth elements smartphones electronic display