Magnetic Phase Transitions in La1-xRxMn2Si2 (R=Gd, Tb, Dy) Compounds

2012 ◽  
Vol 190 ◽  
pp. 171-174 ◽  
Author(s):  
E.G. Gerasimov ◽  
N.V. Mushnikov ◽  
V.S. Gaviko
Keyword(s):  
Phase Transitions ◽  
Phase Diagrams ◽  
Magnetic Measurements ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
Magnetic Structures ◽  
Easy Direction ◽  
Irreversible Magnetization ◽  
Magnetization Processes ◽  
Magnetic Phase Diagrams

Magnetic properties of the La1xRxMn2Si2 (R is Gd, Tb, Dy; 0 x 1) compounds were investigated using magnetic measurements on quasi-single crystals. The x-T concentration magnetic phase diagrams are constructed. All obtained x-T magnetic phase diagrams are found to be similar. Six magnetic structures are realized in the compounds at different concentrations x. It was shown that all the compounds have strong magnetic anisotropy with the c-axis as the easy direction. For the compounds with x = 0.2, the irreversible magnetization processes are observed which can be attributed to the existence of a compensation point at which the R and Mn magnetic sublattices compensate each other. The nature of various spontaneous and field-induced phase transitions is also discussed.

scholarly journals Magnetic structures and magnetic phase transitions in the Mn-doped orthoferrite TbFeO3 studied by neutron powder diffraction

2016 ◽  
Vol 119 (5) ◽  
pp. 053901 ◽  
Author(s):  
Harikrishnan S. Nair ◽  
Tapan Chatterji ◽  
C. M. N. Kumar ◽  
Thomas Hansen ◽  
Hariharan Nhalil ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Powder Diffraction ◽  
Magnetic Phase ◽  
Neutron Powder Diffraction ◽  
Magnetic Phase Transitions ◽  
Magnetic Structures ◽  
Mn Doped

Magnetic Structures and Magnetic Phase Transitions in TbCoSi2.

ChemInform ◽  
2004 ◽  
Vol 35 (21) ◽  
Author(s):  
B. Penc ◽  
A. Szytula ◽  
E. Wawrzynska ◽  
J. Hernandez-Velasco
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
Magnetic Structures

Magnetic phase transitions and magnetic structures of In2Cu2O5 and Sc2Cu2O5

1997 ◽  
Vol 102 (1) ◽  
pp. 71-75 ◽  
Author(s):  
M.N Popova ◽  
S.A Klimin ◽  
R Troć ◽  
Z Bukowski
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
Magnetic Structures

scholarly journals Magnetic structures of (Gd1-xYx)Mn2Ge2 and (Tb1-xYx)Mn2Ge2 studied by neutron powder diffraction

2018 ◽  
Vol 185 ◽  
pp. 04009 ◽  
Author(s):  
Sergey Granovsky ◽  
Irina Gaidukova ◽  
Clemens Ritter
Keyword(s):  
Electrical Resistivity ◽  
Phase Transitions ◽  
Powder Diffraction ◽  
Magnetic Phase ◽  
Neutron Powder Diffraction ◽  
Magnetic Phase Transitions ◽  
Magnetic Structures ◽  
Tetragonal Axis

Magnetic structures and magnetic phase transitions in “naturaly-layered” (Gd1-xYx)Mn2Ge2 and (Tb1-xYx)Mn2Ge2 compounds have been studied by electrical resistivity and neutron powder diffraction experiments. Hot neutrons were used to probe the magnetic structures of Gd-containing materials. The variable R-Mn exchange forces Gd moments to realign from the tetragonal axis into the plane and back to this axis, whereas canted and tripled structures were detected in the series of compounds containing the highly anisotropic Tb-ion.

Magnetic phase transitions and phase diagrams of DyMn2Ge2

2001 ◽  
Vol 93 (4) ◽  
pp. 796-804 ◽  
Author(s):  
Guo Guanghua ◽  
M. V. Eremin ◽  
A. Kirste ◽  
N. P. Kolmakova ◽  
A. S. Lagutin ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Phase Diagrams ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions

Magnetic Structures and Magnetic Phase Transitions in Rare-Earth RMn2Si2 Intermetallic Compounds (R = Sm, Tb)

2018 ◽  
Vol 60 (6) ◽  
pp. 1082-1089 ◽  
Author(s):  
N. V. Mushnikov ◽  
E. G. Gerasimov ◽  
V. S. Gaviko ◽  
P. B. Terent’ev ◽  
K. A. Yazovskikh ◽  
...  
Keyword(s):  
Rare Earth ◽  
Phase Transitions ◽  
Intermetallic Compounds ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
Magnetic Structures

Magnetic structures and magnetic phase transitions in TbMn0.33Ge2

2001 ◽  
Vol 320 (1) ◽  
pp. 29-32 ◽  
Author(s):  
A. Gil ◽  
M. Hofmann ◽  
B. Penc ◽  
A. Szytuła
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
Magnetic Structures

Phase Diagrams of Ni2MnX (X = In, Sn, Sb) Heusler Alloys with Inversion of Exchange Interaction

2008 ◽  
Vol 583 ◽  
pp. 131-146 ◽  
Author(s):  
Vasiliy D. Buchelnikov ◽  
Sergey Taskaev ◽  
M.A. Zagrebin ◽  
Peter Entel
Keyword(s):  
Free Energy ◽  
Phase Transitions ◽  
Exchange Interaction ◽  
Phase Diagrams ◽  
Magnetic Phase ◽  
Landau Theory ◽  
Heusler Alloys ◽  
Magnetic Phase Transitions ◽  
Experimental Phase ◽  
Ginzburg Landau

In this work with the help of the phenomenological Ginzburg-Landau theory of structural and magnetic phase transitions the phase diagrams of Heusler Ni-Mn-X (X = In, Sn, Sb) alloys with the inversion of exchange interaction are investigated. The investigation shows that the type of the phase diagrams in Heusler Ni-Mn-X (X = In, Sn, Sb) alloys depends on the value and sign of the free energy parameters. As it is seen from the analysis of the phase diagrams with the determined values and signs of the parameters of Landau functional there are thermodynamic paths which allow to explain experimental phase transitions in Heusler alloys Ni-Mn-X (X = In, Sn, Sb) and Ni-Co- Mn-X (X = In, Sn, Sb) qualitatively.

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