skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Realization of the axial next-nearest-neighbor Ising model in U 3 Al 2 Ge 3

Abstract

In this paper, we report small-angle neutron scattering (SANS) measurements and theoretical modeling of U 3 Al 2 Ge 3 . Analysis of the SANS data reveals a phase transition to sinusoidally modulated magnetic order at T N = 63 K to be second order and a first-order phase transition to ferromagnetic order at T c = 48 K. Within the sinusoidally modulated magnetic phase (T c < T < T N), we uncover a dramatic change, by a factor of 3, in the ordering wave vector as a function of temperature. Finally, these observations all indicate that U 3 Al 2 Ge 3 is a close realization of the three-dimensional axial next-nearest-neighbor Ising model, a prototypical framework for describing commensurate to incommensurate phase transitions in frustrated magnets.

Authors:
 [1];  [1];  [2];  [1];  [1];  [3];  [4];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  3. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Neutron Research; Univ. of Maryland, College Park, MD (United States). Dept. of Materials Science and Engineering
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); LANL Laboratory Directed Research and Development (LDRD) Program; Dept. of Commerce (United States); National Science Foundation (NSF)
OSTI Identifier:
1409774
Alternate Identifier(s):
OSTI ID: 1408169; OSTI ID: 1410942
Report Number(s):
LA-UR-17-24069
Journal ID: ISSN 2469-9950
Grant/Contract Number:  
AC52-06NA25396; DMR-1508249; AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 17; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Material Science

Citation Formats

Fobes, David M., Lin, Shi-Zeng, Ghimire, Nirmal J., Bauer, Eric D., Thompson, Joe D., Bleuel, Markus, DeBeer-Schmitt, Lisa M., and Janoschek, Marc. Realization of the axial next-nearest-neighbor Ising model in U3Al2Ge3. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.174413.
Fobes, David M., Lin, Shi-Zeng, Ghimire, Nirmal J., Bauer, Eric D., Thompson, Joe D., Bleuel, Markus, DeBeer-Schmitt, Lisa M., & Janoschek, Marc. Realization of the axial next-nearest-neighbor Ising model in U3Al2Ge3. United States. doi:10.1103/PhysRevB.96.174413.
Fobes, David M., Lin, Shi-Zeng, Ghimire, Nirmal J., Bauer, Eric D., Thompson, Joe D., Bleuel, Markus, DeBeer-Schmitt, Lisa M., and Janoschek, Marc. Thu . "Realization of the axial next-nearest-neighbor Ising model in U3Al2Ge3". United States. doi:10.1103/PhysRevB.96.174413.
@article{osti_1409774,
title = {Realization of the axial next-nearest-neighbor Ising model in U3Al2Ge3},
author = {Fobes, David M. and Lin, Shi-Zeng and Ghimire, Nirmal J. and Bauer, Eric D. and Thompson, Joe D. and Bleuel, Markus and DeBeer-Schmitt, Lisa M. and Janoschek, Marc},
abstractNote = {In this paper, we report small-angle neutron scattering (SANS) measurements and theoretical modeling of U3Al2Ge3. Analysis of the SANS data reveals a phase transition to sinusoidally modulated magnetic order at TN = 63 K to be second order and a first-order phase transition to ferromagnetic order at Tc = 48 K. Within the sinusoidally modulated magnetic phase (Tc < T < TN), we uncover a dramatic change, by a factor of 3, in the ordering wave vector as a function of temperature. Finally, these observations all indicate that U3Al2Ge3 is a close realization of the three-dimensional axial next-nearest-neighbor Ising model, a prototypical framework for describing commensurate to incommensurate phase transitions in frustrated magnets.},
doi = {10.1103/PhysRevB.96.174413},
journal = {Physical Review B},
number = 17,
volume = 96,
place = {United States},
year = {Thu Nov 09 00:00:00 EST 2017},
month = {Thu Nov 09 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on November 9, 2018
Publisher's Version of Record

Save / Share: