Local moments, exchange interactions, and magnetic order in Mn-doped LaFe2Si2 alloys

Turek, I.; Diviš, M.; Nižňanský, Daniel; Vejpravová, J.

doi:10.1016/j.jmmm.2007.04.026

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…Although the Fe ions in the 4d crystallographic site have a non-cubic symmetry, the quadrupole splitting, is relatively small, 0.06±0.02 mm s −1 . These values correspond to divalent non-magnetic Fe state found in other Fe-based intermetallic compounds with the ThCr 2 Si 2 -type structure [22,23]. Figure 5 definitely proves the absence of sizable permanent long-range magnetic moments in the Fe sites, and confirms our old claim that Fe in RFe 2 Si 2 is non-magnetic [1][2][3].…”

Section: Magnetic Studies Of Rfe 2 Si 2 (R = Y La and Lu)supporting

confidence: 82%

Magnetic and structural relationship ofRFe₂Si₂andR(Fe_1−xM_x)₂Si₂(x= 0−1) systems (R= La, Y and Lu,M= Ni, Mn and Cu)

Felner¹,

Lv²,

Chu³

2014

J. Phys.: Condens. Matter

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Due to the similarity between AFe(2)As(2) (A = Ba, Sr) and RFe(2)Si(2) (R = La, Y and Lu), the RFe(2)Si(2) system has been proposed as a potential candidate for a new high TC superconducting family containing Fe-Si (instead of Fe-As) layers as a structural unit. Various R (Fe(1-x)M(x))2 Si(2) (M = Ni and Cu) materials were synthesized and measured for their magnetic properties. None of these materials is superconducting down to 1.8 K. A pronounced peak at 232 K was observed in the magnetization curve of YFe(2)Si(2). (57)Fe Mössbauer studies confirm the absence of any long-range magnetic ordering below 232 K. Similar peaks at various temperatures also appear in R (Fe(1-x)M(x))2 Si2 samples. For Y (Fe(1-x)Mn(x))2 Si(2) the peak position is dramatically affected by the magnetic Mn dopants. Four independent factors affect the peak position and shift it to lower temperatures: (i) the lattice parameters, (ii) the concentration of x (iii) the applied magnetic field and (iv) the magnetic nature of M. It is proposed that the magnetic peaks observed in RFe(2)Si(2) and in R (Fe(1-x)M(x))2 Si(2) represent a new nearly ferromagnetic Fermi liquid system, its nature is yet to be determined.

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Section: Magnetic Studies Of Rfe 2 Si 2 (R = Y La and Lu)supporting

confidence: 82%

Magnetic and structural relationship ofRFe₂Si₂andR(Fe_1−xM_x)₂Si₂(x= 0−1) systems (R= La, Y and Lu,M= Ni, Mn and Cu)

Felner¹,

Lv²,

Chu³

2014

J. Phys.: Condens. Matter

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“…LaFe 2 Ge 2 and LaFe 2 Si 2 have the same crystal structure 23 and electronic configure as those of YFe 2 Ge 2 . LaFe 2 Si 2 is more attractive because of being close to the magnetic QCP 24,25 , which will enhance the possibility of superconductivity. If superconductivity appears in LaFe 2 Ge 2 and LaFe 2 Si 2 , their Tc will be higher than that of YFe 2 Ge 2 .…”

Section: Introductionmentioning

confidence: 99%

Electronic structures and magnetism of LaFe2Ge2 and LaFe2Si2: First-principles studies

Wang

Shi

2016

Physica C: Superconductivity and its Applications

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Search for New High-Tc Superconductors at Elevated Temperatures

Felner

2021

J Supercond Nov Magn

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Local moments, exchange interactions, and magnetic order in Mn-doped LaFe2Si2 alloys

Cited by 4 publications

References 7 publications

Magnetic and structural relationship ofRFe₂Si₂andR(Fe_1−xM_x)₂Si₂(x= 0−1) systems (R= La, Y and Lu,M= Ni, Mn and Cu)

Magnetic and structural relationship ofRFe₂Si₂andR(Fe_1−xM_x)₂Si₂(x= 0−1) systems (R= La, Y and Lu,M= Ni, Mn and Cu)

Electronic structures and magnetism of LaFe2Ge2 and LaFe2Si2: First-principles studies

Search for New High-Tc Superconductors at Elevated Temperatures

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Local moments, exchange interactions, and magnetic order in Mn-doped LaFe2Si2 alloys

Cited by 4 publications

References 7 publications

Magnetic and structural relationship ofRFe2Si2andR(Fe1−xMx)2Si2(x= 0−1) systems (R= La, Y and Lu,M= Ni, Mn and Cu)

Magnetic and structural relationship ofRFe2Si2andR(Fe1−xMx)2Si2(x= 0−1) systems (R= La, Y and Lu,M= Ni, Mn and Cu)

Electronic structures and magnetism of LaFe2Ge2 and LaFe2Si2: First-principles studies

Search for New High-Tc Superconductors at Elevated Temperatures

Contact Info

Product

Resources

About

Magnetic and structural relationship ofRFe₂Si₂andR(Fe_1−xM_x)₂Si₂(x= 0−1) systems (R= La, Y and Lu,M= Ni, Mn and Cu)

Magnetic and structural relationship ofRFe₂Si₂andR(Fe_1−xM_x)₂Si₂(x= 0−1) systems (R= La, Y and Lu,M= Ni, Mn and Cu)