Contactless measurement of colossal magnetoresistance in La1−xSrxMnO3 using the infrared magnetorefractive effect

Giant magnetotransmission and magnetoreflection in ferromagnetic materials

“…It was shown theoretically [36] that in manganites the ΔR/R and Δt/ t effects are optical responses on colossal magnetoresistance in the infrared spectral region. The main papers devoted to the study of ΔR/R and Δt/t in the manganites represent data for infrared range where these effects are predominantly associated with the interaction of light with both localized and delocalized charge carriers [37][38][39][40].…”

“…It was shown that there is a possibility to gain in magnetotransmission in multilayers, for example, in the ferrite/manganite heterostructure due to biasing of manganite layer by ferrite one [54], in the heterostructure HTSC/manganite due to the concentration of magnetic flux in the manganite layer [55] or to receive a practically temperature-independent magnetotransmission in the heterostructure consisting of the layers with different T C [56]. All these efforts aimed at development of novel multifunctional magneto-optical materials and resulted in promising applications [39,57,58].…”

Modelling the magnetorefractive effect in giant magnetoresistive granular and layered materials

“…Following its first discovery using Ni 80 Fe 20 /Cu/Co/Cu multilayers in transmission experiments [1], infrared-wavelength MRE measurements have been extended to the reflection geometry [4,5], contributions to the effect from interband transitions [6] and phonon modes have been identified [7], and MRE results compared to magnetic-linear-dichroism and emissivity studies [8,9]. The wide applicability has been demonstrated in studies of the transport properties of GMR granular [5,10], multilayer [11], spin-valve [8,12] thin films, LaSrMnO perovskites [13] and granular metal-insulator systems [14][15][16].…”

The influence of tilt angle on the CMR in Sm0.6Sr0.4MnO3

“…After this temperature (T ∼ 74 K) a metallic behavior is observed. This behavior is similar to electron or hole doped manganites [18][19][20][21][22]. A hysteresis between heating and cooling of ρ(T) is characterized.…”