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@article{1689316,
author = {Arregi, Jon Ander and Caha, Ondřej and Uhlíř, Vojtěch},
article_location = {College PK (USA)},
article_number = {17},
doi = {http://dx.doi.org/10.1103/PhysRevB.101.174413},
keywords = {Antiferromagnetism; Epitaxial strain; Ferromagnetism; First order phase transitions; Magnetic phase transitions},
language = {eng},
issn = {2469-9950},
journal = {Physical Review B},
title = {Evolution of strain across the magnetostructural phase transition in epitaxial FeRh films on different substrates},
url = {https://doi.org/10.1103/PhysRevB.101.174413},
volume = {101},
year = {2020}
}
TY - JOUR
ID - 1689316
AU - Arregi, Jon Ander - Caha, Ondřej - Uhlíř, Vojtěch
PY - 2020
TI - Evolution of strain across the magnetostructural phase transition in epitaxial FeRh films on different substrates
JF - Physical Review B
VL - 101
IS - 17
SP - 1-14
EP - 1-14
PB - American Physical Society
SN - 24699950
KW - Antiferromagnetism
KW - Epitaxial strain
KW - Ferromagnetism
KW - First order phase transitions
KW - Magnetic phase transitions
UR - https://doi.org/10.1103/PhysRevB.101.174413
L2 - https://doi.org/10.1103/PhysRevB.101.174413
N2 - We present a detailed x-ray diffraction study of the structural evolution of epitaxial FeRh films across the temperature-driven phase transition between antiferromagnetic and ferromagnetic order. FeRh films grown onto MgO, W/MgO, and Al2O3 substrates show qualitatively different lattice distortions (tetragonal vs rhombohedral), while keeping a sharp transition above room temperature. Temperature-dependent x-ray reciprocal space mapping reveals the phase-specific crystal structure, giving access to both in-plane and out-of-plane lattice parameters and crystalline coherence lengths across different stages of the phase transition. Diffuse x-ray scattering from relaxed films is treated via a mosaic block model, which provides a robust data fitting scheme. It is found that the ferromagnetic phase fraction can stand a larger amount of strain before completely annihilating and transitioning to the antiferromagnetic phase upon cooling, as compared to heating. This is related to the distinct magnetic exchange correlations in the antiferromagnetic and ferromagnetic parent phases.
ER -
ARREGI, Jon Ander, Ondřej CAHA a Vojtěch UHLÍŘ. Evolution of strain across the magnetostructural phase transition in epitaxial FeRh films on different substrates. \textit{Physical Review B}. College PK (USA): American Physical Society, 2020, roč.~101, č.~17, s.~1-14. ISSN~2469-9950. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.101.174413.
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