Title: Three-dimensional Ising ferrimagnetism of Cr-Fe-Cr trimers in FeCr2Te4

Abstract

We carried out a comprehensive study of magnetic critical behavior in single crystals of ternary chalcogenide $\mathrm{Fe}{\mathrm{Cr}}_2{\mathrm{Te}}_4$ that undergoes a ferrimagnetic transition below $T_c~$ 123 K. Detailed critical behavior analysis and scaled magnetic entropy change indicate a second-order ferrimagnetic transition. Critical exponents $\beta =0.30\left(1\right)$ with $T_c=122.4\left(5\right)\mathrm{K},\gamma =1.22\left(1\right)$ with $T_c=122.8\left(1\right)\mathrm{K}$, and $\delta =4.24\left(2\right)$ at $T_c~123\mathrm{K}$ suggest that the spins approach the three-dimensional Ising ( $\beta =0.325,\gamma =1.24$, and $\delta =4.82$) model coupled with attractive long-range interactions between spins that decay as $J\left(r\right)\approx r^{-4.88}$. Our results suggest that the ferrimagnetism in $\mathrm{Fe}{\mathrm{Cr}}_2{\mathrm{Te}}_4$ is due to itinerant ferromagnetism among the antiferromagnetically coupled Cr-Fe-Cr trimers.

Authors:

Liu, Yu  ^[1];

• Search DOE PAGES for author "Liu, Yu"
• Search DOE PAGES for ORCID "0000-0001-8886-2876"

Koch, R. J.  ^[1];

• Search DOE PAGES for author "Koch, R. J."
• Search DOE PAGES for ORCID "0000-0003-4995-2101"

Hu, Zhixiang ^[2]; Aryal, Niraj ^[1]; Stavitski, Eli ^[3]; Tong, Xiao  ^[4];

• Search DOE PAGES for author "Tong, Xiao"
• Search DOE PAGES for ORCID "0000-0002-5567-9677"

Attenkofer, Klaus ^[3]; Bozin, E. S.  ^[1];

• Search DOE PAGES for author "Bozin, E. S."
• Search DOE PAGES for ORCID "0000-0002-6682-0365"

Yin, Weiguo  ^[1];

• Search DOE PAGES for author "Yin, Weiguo"
• Search DOE PAGES for ORCID "0000-0002-4965-5329"

Petrovic, C. ^[2]

---

+ Show Author Affiliations

1. Brookhaven National Lab. (BNL), Upton, NY (United States)
2. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
3. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
4. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)

Publication Date:

Mon Aug 31 00:00:00 EDT 2020

Research Org.:

Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:

1657158

Report Number(s):

BNL-216331-2020-JAAM
Journal ID: ISSN 2469-9950; TRN: US2203235

Grant/Contract Number:  

SC0012704

Resource Type:

Accepted Manuscript

Journal Name:

Physical Review B

Additional Journal Information:

Journal Volume: 102; Journal Issue: 8; 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; Density of states; ferrimagnetism; first-principles calculations; magnetocaloric effect