Negative to positive magnetoresistance and magnetocaloric effect in Pr0.6Er0.4Al2

Pathak, Arjun K.; Gschneidner, Jr., K. A.; Pecharsky, V. K.

doi:10.1016/j.jallcom.2014.09.227

Title: Negative to positive magnetoresistance and magnetocaloric effect in Pr_0.6Er_0.4Al₂

Abstract

We report on the magnetic, magnetocaloric and magnetotransport properties of Pr_0.6Er_0.4Al₂. 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.

Authors:

Pathak, Arjun K. ^[1]; Gschneidner, Jr., K. A. ^[1]; Pecharsky, V. K. ^[1]

Iowa State Univ., Ames, IA (United States)

Publication Date:: Mon Oct 13 00:00:00 EDT 2014

Research Org.:: Ames Lab., Ames, IA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1234552

Alternate Identifier(s):: OSTI ID: 1249853

Report Number(s):: IS-J-8540
Journal ID: ISSN 0925-8388; PII: S0925838814024104

Grant/Contract Number:: AC02-07CH11358

Resource 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

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; rare earth; dialuminides; magnetocaloric; magnetoresistance

Citation Formats


                    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., 2014. 
Web.  doi:10.1016/j.jallcom.2014.09.227.

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                    Pathak, Arjun K., Gschneidner, Jr., K. A., & Pecharsky, V. K. Negative to positive magnetoresistance and magnetocaloric effect in Pr0.6Er0.4Al2.  United States.  https://doi.org/10.1016/j.jallcom.2014.09.227

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                    Pathak, Arjun K., Gschneidner, Jr., K. A., and Pecharsky, V. K. Mon .  
"Negative to positive magnetoresistance and magnetocaloric effect in Pr0.6Er0.4Al2".  United States.  https://doi.org/10.1016/j.jallcom.2014.09.227.  https://www.osti.gov/servlets/purl/1234552.

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@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         = {Mon Oct 13 00:00:00 EDT 2014},

  month        = {Mon Oct 13 00:00:00 EDT 2014}

}

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https://doi.org/10.1016/j.jallcom.2014.09.227

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Works referencing / citing this record:

Magnetocaloric Effect in Non-Interactive Electron Systems: “The Landau Problem” and Its Extension to Quantum Dots
journal, July 2018

Negrete, Oscar; Peña, Francisco; Florez, Juan
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Title: Negative to positive magnetoresistance and magnetocaloric effect in Pr0.6Er0.4Al2

Abstract

Citation Formats

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Title: Negative to positive magnetoresistance and magnetocaloric effect in Pr_0.6Er_0.4Al₂

Magnetic compensation phenomenon and the sign reversal in the exchange bias field in a single crystal of Nd _0.75 Ho _0.25 Al ₂
journal, May 2009

Transition-metal-based magnetic refrigerants for room-temperature applications
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First-order field-induced transition, magnetoresistance, and giant magnetostriction in single crystals of ${(L a}_{0.4} \Pr_{0.6})_{1.2} {Sr}_{1.8} {Mn}_{2} O_{7}$
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