Observation of pressure-induced variation in magnetization and magnetic anisotropy for half-doped La0.5Ca0.5MnO3 nanoparticles

• Published in: Chemical physics letters Vol. 851; p. 141483
• Main Authors: Zhang, Xian, Rao, Rui, Meng, Jing, Liu, Yong, Yu, Hai-Jun, Zheng, Gan-Hong, Wu, Ming-Zai, Ma, Yong-Qing
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 16.09.2024
• Subjects: Charge/orbit ordering; Half-doped La0.5Ca0.5MnO3; Magnetic anisotropy; Magnetic transition; Pressure; Half-doped La0.5Ca0.5MnO3; Pressure; Charge/orbit ordering; Magnetic anisotropy; Magnetic transition
• ISSN: 0009-2614
• DOI: 10.1016/j.cplett.2024.141483

The effects of pressure on the magnetic properties of half-doped La0.5Ca0.5MnO3(LCMO) polycrystalline were investigated. The pressure reduces the paramagnetic-ferromagnetic (FM) transition temperature Tc, the FM-antiferromagnetic transition temperature TN. In the application of the pressure, the magnetization hardly changes (ΔMZFC ≈ 0) above 285 K, increases (ΔMZFC > 0) in the intermediate temperature region of T+/− < T < 285 K and decreases (ΔMZFC < 0) in the low temperature region of T < T+/−, and the possible mechanism was suggested. [Display omitted] •Effects of pressure on magnetism of La0.5Ca0.5MnO3 (LCMO) was investigated.•Pressure reduces Tc but enhances magnetization beyond the double exchange model.•The antiferromagnetic phase in LCMO changes complexly with pressure.•Anisotropy variation due to magnetic transition induced by pressure is observed. The effects of pressure on the magnetic properties of half-doped La0.5Ca0.5MnO3(LCMO) were investigated. Pressure was found to decrease the transition temperature (Tc) from the paramagnetic (PM) phase to the ferromagnetic (FM) phase, from 226 K to 223 K. Moreover, the pressure was also involved in decreasing the transition temperature (TN) for the FM-antiferromagnetic (AFM) phase from 180 K to 175 K. Below TN, the inhomogeneous AFM phase, where both the FM and AFM phases coexist, is observed in LCMO. Pressure induces changes in the zero-field-cooled magnetization (ΔMZFC) exhibiting ΔMZFC ≈ 0 in the PM region above 285 K.