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Title: Negative to positive magnetoresistance and magnetocaloric effect in Pr 0.6Er 0.4Al 2

We report on the magnetic, magnetocaloric and magnetotransport properties of Pr 0.6Er 0.4Al 2. The title compound exhibits a large positive magnetoresistance (MR) for H ≥ 40 kOe and a small but non negligible negative MR for H ≤ 30 kOe. The maximum positive MR reaches 13% at H = 80 kOe. The magnetic entropy and adiabatic temperature changes as functions of temperature each show two anomalies: a broad dome-like maximum below 20 K and a relatively sharp peak at higher temperature. As a result, observed behaviors are unique among other binary and mixed lanthanide compounds.
Authors:
 [1] ;  [1] ;  [1]
  1. Iowa State Univ., Ames, IA (United States)
Publication Date:
Report Number(s):
IS-J-8540
Journal ID: ISSN 0925-8388; PII: S0925838814024104
Grant/Contract Number:
AC02-07CH11358
Type:
Accepted Manuscript
Journal Name:
Journal of Alloys and Compounds
Additional Journal Information:
Journal Volume: 621; Journal Issue: C; Journal ID: ISSN 0925-8388
Publisher:
Elsevier
Research Org:
Ames Lab., Ames, IA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; rare earth; dialuminides; magnetocaloric; magnetoresistance
OSTI Identifier:
1234552
Alternate Identifier(s):
OSTI ID: 1249853

Pathak, Arjun K., Gschneidner, Jr., K. A., and Pecharsky, V. K.. Negative to positive magnetoresistance and magnetocaloric effect in Pr0.6Er0.4Al2. United States: N. p., Web. doi:10.1016/j.jallcom.2014.09.227.
Pathak, Arjun K., Gschneidner, Jr., K. A., & Pecharsky, V. K.. Negative to positive magnetoresistance and magnetocaloric effect in Pr0.6Er0.4Al2. United States. doi:10.1016/j.jallcom.2014.09.227.
Pathak, Arjun K., Gschneidner, Jr., K. A., and Pecharsky, V. K.. 2014. "Negative to positive magnetoresistance and magnetocaloric effect in Pr0.6Er0.4Al2". United States. doi:10.1016/j.jallcom.2014.09.227. https://www.osti.gov/servlets/purl/1234552.
@article{osti_1234552,
title = {Negative to positive magnetoresistance and magnetocaloric effect in Pr0.6Er0.4Al2},
author = {Pathak, Arjun K. and Gschneidner, Jr., K. A. and Pecharsky, V. K.},
abstractNote = {We report on the magnetic, magnetocaloric and magnetotransport properties of Pr0.6Er0.4Al2. The title compound exhibits a large positive magnetoresistance (MR) for H ≥ 40 kOe and a small but non negligible negative MR for H ≤ 30 kOe. The maximum positive MR reaches 13% at H = 80 kOe. The magnetic entropy and adiabatic temperature changes as functions of temperature each show two anomalies: a broad dome-like maximum below 20 K and a relatively sharp peak at higher temperature. As a result, observed behaviors are unique among other binary and mixed lanthanide compounds.},
doi = {10.1016/j.jallcom.2014.09.227},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 621,
place = {United States},
year = {2014},
month = {10}
}