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Structural, Electrical and Magnetoresistive Properties of Strontium-Substituted Lanthanum Manganites

“…Проте, практично у всіх ранніх роботах об'єкти досліджень були виготовлені традиційною на той час методою твердофазної си-нтези. Особливістю цієї методи є те, що зразки одержуються при високій температурі (понад 1200С), а процес синтези перебігає з утворенням великої кількости проміжних фаз [15]. На відміну від твердофазної синтези, золь-ґель-метода ґрунтується на викорис-танні однорідної суміші реаґентів і уможливлює значно зменшити температуру одержання однофазного продукту з малим розміром і однорідним за розміром зерном [16].…”

Nanoparticles of spinel and perovskite ferromagnets and prospects for their application in medicine

“…Thus, the Curie temperature can act as a thermostatic switch, which maintains a constant desired temperature in the tumor region. In view of these facts, the NPs of substituted lanthanum manganite La 1-x Sr x MnO 3 are some of the best candidates for self-controlled HT applications because they not only have higher magnetic moment at room temperature than that of most of them for such applications, but also their Curie temperature can be easily adjusted between 315 and 350 K [8,9].…”

Left-handed behavior of strontium-doped lanthanum manganite in the millimeter waveband

“…9,10 Specific feature of such materials is a phase transition from ferromagnetic metallic to paramagnetic dielectric state. 11 The temperature of the phase transition ͑Cu-rie temperature, T C ͒ can be changed by changing concentration of doping element. 11 In films studied in Ref.…”

“…11 The temperature of the phase transition ͑Cu-rie temperature, T C ͒ can be changed by changing concentration of doping element. 11 In films studied in Ref. 7, calcium was chosen as a doping element.…”

“…The specimen was synthesized by conventional solid-state technology. 9,11 The system, PC with the medium, was embedded into a waveguide and located between poles of an electromagnet. Electrodynamic spectra were registered with Network Analyzer NA5230 at temperatures ͑T = 290-400 K͒ and magnetic fields up to 7500 Oe.…”