2002
DOI: 10.1016/s0925-8388(02)00110-x
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Magnetic phase transitions and giant magnetoresistance in La1−Sm Mn2Si2 (0≤x≤1)

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Cited by 24 publications
(12 citation statements)
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“…4͑b͒ we show the x-T magnetic phase diagram of La 1−x Sm x Mn 2 Si 2 system in which the lattice parameters and the elementary cell volume gradually decrease with increasing Sm concentration. 9 One can see that the P-T phase diagram of La 0.75 Sm 0.25 Mn 2 Si 2 is qualitatively similar to the x-T phase diagram of the La 1−x Sm x Mn 2 Si 2 series. The critical temperatures of magnetic transitions in La 0.75 Sm 0.25 Mn 2 Si 2 change with increasing pressure similarly with those for the La 1−x Sm x Mn 2 Si 2 system with increasing Sm content.…”
Section: Resultsmentioning
confidence: 58%
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“…4͑b͒ we show the x-T magnetic phase diagram of La 1−x Sm x Mn 2 Si 2 system in which the lattice parameters and the elementary cell volume gradually decrease with increasing Sm concentration. 9 One can see that the P-T phase diagram of La 0.75 Sm 0.25 Mn 2 Si 2 is qualitatively similar to the x-T phase diagram of the La 1−x Sm x Mn 2 Si 2 series. The critical temperatures of magnetic transitions in La 0.75 Sm 0.25 Mn 2 Si 2 change with increasing pressure similarly with those for the La 1−x Sm x Mn 2 Si 2 system with increasing Sm content.…”
Section: Resultsmentioning
confidence: 58%
“…On the other hand, the AF-F phase transition in RMn 2 X 2 can be qualitatively described in a model of the localized magnetic moments in the assumption of a strong dependence of the interlayer Mn-Mn exchange interaction from the intralayer Mn-Mn distances. [6][7][8][9] Earlier we investigated the magnetic properties and magnetic structures of a series of La 1−x Sm x Mn 2 Si 2 compounds in which the Mn-Mn distance changes continuously from d Mn-Mn Ͼ d c to d Mn-Mn Ͻ d c with increasing the Sm concentration. 9,10 In the present paper we studied the effect of hydrostatic pressure on magnetic properties of a quasisingle crystal La 0.75 Sm 0.25 Mn 2 Si 2 for which d Mn-Mn Ϸ d c to reveal the origin of the spontaneous and field-induced magnetic phase transitions in the layered RMn 2 X 2 compounds.…”
Section: Introductionmentioning
confidence: 99%
“…Substitution of any R element for La leads to decrease in the lattice parameters and pushes the system to antiferromagnetic ordering. For La 1 À x Sm x Mn 2 Si 2 , the Mn-Mn distance approaches the critical value at x ¼0.25 [3,4]. Fig.…”
Section: Resultsmentioning
confidence: 84%
“…For the LaMn 2 Si 2 compound, the in-plane Mn-Mn distance d Mn-Mn ¼0.291 nm is above the critical value, and the compound is a ferromagnet [3]. Substitution of any R element for La leads to decrease in the lattice parameters and pushes the system to antiferromagnetic ordering.…”
Section: Resultsmentioning
confidence: 99%
“…Замещение лантана на самарий, имеющий меньший атомный радиус, приводит к уменьшению параметров решетки a и c [17]. формируется ферримагнитная структура [21,22].…”
Section: экспериментальные результаты и их обсуждениеunclassified