Magnetic transition behavior in epitaxial Fe 47 Rh 47 Pd 6 films

Sato, Hideo; Pachauri, Neha; Keshavarz, Sahar; Joshi, Chhatra R.; Lee, Hwachol; Mankey, Gary J.; LeClair, Patrick

doi:10.1116/6.0001573

Title: Magnetic transition behavior in epitaxial Fe ₄₇ Rh ₄₇ Pd ₆ films

Journal Article · 10 February 2022 · Journal of Vacuum Science and Technology A

DOI: https://doi.org/10.1116/6.0001573 · OSTI ID:1980707

Sato, Hideo ^[1]; Pachauri, Neha ^[2]; Keshavarz, Sahar ^[2]; Joshi, Chhatra R. ^[2]; Lee, Hwachol ^[2];

^[2]; LeClair, Patrick ^[2]

Univ. of Alabama, Tuscaloosa, AL (United States); Univ. of Alabama, Tuscaloosa, AL (United States)
Univ. of Alabama, Tuscaloosa, AL (United States)

The properties of Fe–Rh–Pd epitaxial thin films grown on MgO(001) were studied as a function of growth temperature. Films grown above 400°C exhibit a first-order antiferromagnetic to ferromagnetic magnetic phase transition with a transition temperature that decreases as the growth temperature is increased. The chemical order parameter computed from the ratio of intensities of the (001) and (002) diffraction peaks is nearly independent of the growth temperature, while the lattice constants change slightly. A comparison of our structural, magnetic, and electrical transport results with first-principle-based calculations as well as literature results indicates that the transition temperature of Fe–Rh-based alloy films depends sensitively on the lattice parameters and is of electronic origin. The transition temperature and its width can be tuned over a wide range by controlling the crystal structure via growth conditions or postdeposition annealing.

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Research Organization:: Univ. of Alabama, Tuscaloosa, AL (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC)

Grant/Contract Number:: FG02-08ER46499

OSTI ID:: 1980707

Journal Information:: Journal of Vacuum Science and Technology A, Journal Name: Journal of Vacuum Science and Technology A Journal Issue: 2 Vol. 40; ISSN 0734-2101

Publisher:: American Vacuum Society / AIPCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Magnetic transition behavior in epitaxial Fe 47 Rh 47 Pd 6 films

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Title: Magnetic transition behavior in epitaxial Fe ₄₇ Rh ₄₇ Pd ₆ films