Pressure-Tunable Crystal Structure and Magnetic Transition Temperature of the Nowotny Chimney-Ladder CrGeγ Phase

The effect of In addition on the magnetostructural transition behavior and magnetocaloric effect in the Mn-rich Heusler Mn-Ni-In melt spun ribbons have been studied in the present work. With the increasing of the In content, the crystal structure of the alloys are tetragonal NM martensite (for x=7~8.5), 7M monoclinic martensite (for x=9, 9.5) and L21 austenite (for x=10, 11), respectively. It was found that the increase of the In content results in both a progressive decrease of the martensitic transformation temperature and a continuously enhancement of the austenite magnetic transition temperature. For the ribbons with In content of 9.5 at%, it shows the combination of the structural transformation and the magnetic transition. The large magnetization difference between the two phases confirms the occurrence of the field-induced martensitic reverse transformation.

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Evidence for monoclinic crystal structure and negative thermal expansion below magnetic transition temperature in Pb(Fe1∕2Nb1∕2)O3

Applied Physics Letters ◽

10.1063/1.2748856 ◽

2007 ◽

Vol 90 (24) ◽

pp. 242915 ◽

Cited By ~ 48

Author(s):

Satendra Pal Singh ◽

Dhananjai Pandey ◽

Songhak Yoon ◽

Sunggi Baik ◽

Namsoo Shin

Keyword(s):

Crystal Structure ◽

Thermal Expansion ◽

Transition Temperature ◽

Magnetic Transition ◽

Negative Thermal Expansion ◽

Monoclinic Crystal ◽

Magnetic Transition Temperature ◽

Monoclinic Crystal Structure

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Observation of enhanced magnetic transition temperature inNd2PdGe3and superconductivity inY2PdGe3

Physical Review B ◽

10.1103/physrevb.63.172407 ◽

2001 ◽

Vol 63 (17) ◽

Cited By ~ 28

Author(s):

Subham Majumdar ◽

E. V. Sampathkumaran

Keyword(s):

Transition Temperature ◽

Magnetic Transition ◽

Magnetic Transition Temperature

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Effect of A-site cation substitution on magnetic transition temperature of (LaCa) MnO3

Science in China Series A Mathematics ◽

10.1007/bf02878995 ◽

1999 ◽

Vol 42 (7) ◽

pp. 758-762

Author(s):

Kebin Li ◽

Shouguo Wang ◽

Rongsheng Cheng ◽

Xijun Li ◽

Denglu Hou ◽

...

Keyword(s):

Transition Temperature ◽

Magnetic Transition ◽

Cation Substitution ◽

Magnetic Transition Temperature ◽

A Site

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Direct Synthesis of Chromium Perovskite Oxyhydride with a High Magnetic-Transition Temperature

Angewandte Chemie ◽

10.1002/ange.201405453 ◽

2014 ◽

Vol 126 (39) ◽

pp. 10545-10548 ◽

Cited By ~ 15

Author(s):

Cédric Tassel ◽

Yoshihiro Goto ◽

Yoshinori Kuno ◽

James Hester ◽

Mark Green ◽

...

Keyword(s):

Transition Temperature ◽

Magnetic Transition ◽

Direct Synthesis ◽

Magnetic Transition Temperature

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Magnetic Phase Transitions and Magnetocaloric Effect in R2Fe17 (R = Y, Tb, Er)

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.233-234.204 ◽

2015 ◽

Vol 233-234 ◽

pp. 204-207 ◽

Cited By ~ 1

Author(s):

S.A. Nikitin ◽

I.A. Ovchenkova ◽

Georgiy A. Tskhadadze ◽

Konstantin P. Skokov

Keyword(s):

Transition Temperature ◽

Magnetocaloric Effect ◽

Magnetic Phase ◽

Magnetic Transition ◽

Exchange Interactions ◽

Thermodynamic Theory ◽

Magnetic Phase Transitions ◽

Magnetic Transition Temperature ◽

Local Fluctuations ◽

Direct Measurements

The direct measurements of the magnetocaloric effect (MCE) and the magnetization for R2Fe17 (R = Y, Tb, Dy) compounds are reported. The maximal values of the MCE for different R2Fe17 compounds are almost the same at the Curie temperature and are equal to 0.8 – 0.85 K at ΛH = 13.5 kOe. The field dependencies of the magnetization and MCE and the dependence of MCE via magnetization deviates from the classical regularities and describes by the thermodynamic theory attracting the higher terms. Obviously the occurrence of the mixed exchange interactions in these compounds leads to the requirement of consideration both thermal and local fluctuations of the exchange integrals near the magnetic transition temperature.

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