On the origin of the giant isotopic effect of hydrogen on the magnetic properties of YFe2A4.2 (A = H, D): A high pressure study | Zendy

O. Isnard | Zendy; V. PaulBoncour | Zendy; Z. Arnold | Zendy

Open Access

On the origin of the giant isotopic effect of hydrogen on the magnetic properties of YFe2A4.2 (A = H, D): A high pressure study

Author(s) -

O. Isnard,

V. PaulBoncour,

Z. Arnold

Publication year - 2013

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4798260

Subject(s) - antiferromagnetism , ferromagnetism , condensed matter physics , hydrostatic pressure , compressibility , kinetic isotope effect , volume (thermodynamics) , magnetization , chemistry , materials science , thermodynamics , deuterium , physics , magnetic field , quantum mechanics

International audienceIn order to identify the origin of the giant isotope effect observed on the magnetic properties of YFe2A4.2 compounds (A¼H, D) and probe the role of the cell volume difference, we have compared the effect of hydrostatic pressure up to 1.0 GPa on the ferro-antiferromagnetic transition temperatures TF-AF and spontaneous magnetization of YFe2D4.2 and YFe2H4.2. Using compressibility value of 0.013 GPa 1 and the remarkably different negative pressure slopes of TF-AF, the existence of critical volume where the ferromagnetism is suppressed at 0K, VC¼501.760.3 ˚A3, was demonstrated. This consequently established the crucial role of volume on the huge isotope effect observed on the magnetic properties

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