Magnetoresistance and magnetoimpedance in holmium manganese sulfides

Dynamic characteristics of electric charge in HoxMn1–xS

“…Synthesis and structure are described in the articles [22,10]. The time characteristics of the electric charge are determined from the measurement of the charge on the Keithley 6517B electrometer by applying a rectangular signal with a change in the polarity of the electric field applied along the sample (figure 1).…”

“…Resistance is practically independent of temperature in the range of 80-160 K. There is a jump in the temperature dependence of R(T) at T = 260 K and T = 430 K [21]. In Ho0.1Mn0.9S, an electrical polarization hysteresis was detected, which disappears at T = 330 K [10].…”

“…In particular, much attention is paid to multiferroics, which have magnetic and ferroelectric ordering and magnetoelectric interaction [4][5][6]. The solution of this problem is associated with manganese sulfides substituted with rare earth elements [7][8][9], in particular with a solid solution of HoxMn1-xS [10]. Substitution of manganese with holmium ions with x = 0.05 leads to a sharp decrease in the paramagnetic Curie temperature by four times, to a change in magnetic properties [11].…”

Regulation of magnetoresistance in SmxMn1-xS by weak external pressure

“…In the absence of a magnetic order, the rearrangement of the electronic structure can be caused by orbital magnetic moments [6]. In manganese chalcogenides substituted with rare-earth elements of variable valence, due to the electron-lattice interaction, it is possible to change transport characteristics [7][8][9]. The magnetic structure in semiconductors also depends on the spin-phonon interaction, and at certain interaction parameters a gap appears in the spectrum of spin excitations, the type of magnetic ordering changes.…”

Electrical properties and Raman spectra in HoxMn1-xS solid solution

“…A search and a study of the new materials, which possess the colossal magnetic resistance effect is stimulated actively developing spintronics [1][2][3]. The magnetic semiconductors MnS and HoS have one type of crystal structure NaCl and manganese sulphide is the semiconductors [4], and holmium sulfide is the semimetals [5].…”