Structural, Optical, and Magnetic Properties of Mn Doped Zn 3 P 2 Diluted Magnetic Semiconductor Nanoparticles

• Published in: ECS journal of solid state science and technology 2024-05, Vol.13 (5), p.54003
• Main Authors: Praveenkumar, Nakka, Madhusudhana Rao, Nasina, Kalyan Chakravarthi, Maddikera
• Format: Article
• Language: English
• ISSN: 2162-8769; 2162-8777
• DOI: 10.1149/2162-8777/ad47d1

Mn-doped Zn 3 P 2 -diluted magnetic semiconducting nanoparticles (Zn 0.98 Mn 0.02 P 2 , Zn 0.96 Mn 0.04 P 2 , Zn 0.94 Mn 0.06 P 2, and Zn 0.92 Mn 0.08 P 2 ) were synthesized by a conventional solid-state reaction followed by a subsequent vacuum annealing process. The formation of a tetragonal structure of pure and Mn-doped Zn 3 P 2 was confirmed by X-ray diffraction studies, with no evidence of any further phases. Lattice parameters dicrease from a = b = 8.133 Å, c = 11.459 Å to a = b = 8.041 Å, c = 11.410 Å with increasing dopant concentration. Scanning electron microscpy analysis indicated that all samples that underwent doping exhibited agglomeration in the scanned range of 500 nm. Energy-dispersive X-ray analysis confirmed the presence of Zn, P, and Mn in the samples, and all of the synthesized samples achieved a nearly atomic ratio. In the diffused reflectance spectra, the optical band gap increases from 1.398 to 1.418 eV with increasing dopant concentration. PL has provided evidence indicating that the emission intensity of all doped samples remains constant with increasing dopant content from x = 0.02 to 0.08, with different excitation wavelengths (215 and 290 nm). Vibrating sample magnetometer tests confirmed the presence of ferromagnetic behavior at room temperature, and a positive correlation between saturation magnetization and Mn content, with the magnetic moment increasing from 0.0640 to 0.1181 emu g −1 with an increase in dopant content. Mn-doped Zn 3 P 2 nanoparticles synthesized by solid-state reaction method. Characterization analysis of as prepared nanoparticles using XRD, SEM, EDAX, UV–vis-NIR, PL, and VSM. Mn (x = 0.08) doped Zn 3 P 2 showed strong room temperature ferromagnetism than Mn (x = 0.02 to 0.06) doped Zn 3 P 2 nanoparticles. Mn-doped Zn 3 P 2 nanoparticles are potential materials for future spintronics.