Magnetic phase diagram of PrPb3 investigated by specific heat and magnetocaloric effect

R. Vollmer; G. Goll; C. Pfleiderer; H. V. Löhneysen; M. B. Maple; P. C. Canfield

doi:10.1016/S0921-4526(01)01251-0

Magnetic phase diagram of PrPb₃ investigated by specific heat and magnetocaloric effect

R. Vollmer, G. Goll, C. Pfleiderer, H. V. Löhneysen, M. B. Maple, P. C. Canfield

Publikation: Beitrag in Fachzeitschrift › Konferenzartikel › Begutachtung

5 Zitate (Scopus)

Abstract

The intermetallic compound PrPb₃ exhibits antiferroquadrupolar (AFQ) ordering at low temperature. We investigated the magnetic phase diagram through measurements of the specific heat and the magnetocaloric effect. In zero magnetic field the specific heat shows a second-order phase transition with an ordering temperature T_AFQ = 0.39 K in line with earlier results. In addition, we find a further transition at T* = 0.35 K for 3 T and T* = 0.49 K for 4.5 T, which, however, is only observed upon heating. The strong hysteresis between heating and cooling suggests that this transition is of first order. Under hydrostatic pressure of 6.5 kbar, the phase diagram is almost unaltered in agreement with an estimate of dT_AFQ/dp by Ehrenfest's relation.

Originalsprache	Englisch
Seiten (von - bis)	855-857
Seitenumfang	3
Fachzeitschrift	Physica B: Condensed Matter
Jahrgang	312-313
DOIs	https://doi.org/10.1016/S0921-4526(01)01251-0
Publikationsstatus	Veröffentlicht - März 2002
Extern publiziert	Ja
Veranstaltung	International Conference on Strongly Correlated Electrons - Ann Arbor, MI, USA/Vereinigte Staaten Dauer: 6 Aug. 2002 → 6 Aug. 2002

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10.1016/S0921-4526(01)01251-0

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title = "Magnetic phase diagram of PrPb3 investigated by specific heat and magnetocaloric effect",

abstract = "The intermetallic compound PrPb3 exhibits antiferroquadrupolar (AFQ) ordering at low temperature. We investigated the magnetic phase diagram through measurements of the specific heat and the magnetocaloric effect. In zero magnetic field the specific heat shows a second-order phase transition with an ordering temperature TAFQ = 0.39 K in line with earlier results. In addition, we find a further transition at T* = 0.35 K for 3 T and T* = 0.49 K for 4.5 T, which, however, is only observed upon heating. The strong hysteresis between heating and cooling suggests that this transition is of first order. Under hydrostatic pressure of 6.5 kbar, the phase diagram is almost unaltered in agreement with an estimate of dTAFQ/dp by Ehrenfest's relation.",

keywords = "Antiferroquadrupolar order, PrPb, Thermodynamic properties",

author = "R. Vollmer and G. Goll and C. Pfleiderer and L{\"o}hneysen, {H. V.} and Maple, {M. B.} and Canfield, {P. C.}",

year = "2002",

month = mar,

doi = "10.1016/S0921-4526(01)01251-0",

language = "English",

volume = "312-313",

pages = "855--857",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

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note = "International Conference on Strongly Correlated Electrons ; Conference date: 06-08-2002 Through 06-08-2002",

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TY - JOUR

T1 - Magnetic phase diagram of PrPb3 investigated by specific heat and magnetocaloric effect

AU - Vollmer, R.

AU - Goll, G.

AU - Pfleiderer, C.

AU - Löhneysen, H. V.

AU - Maple, M. B.

AU - Canfield, P. C.

PY - 2002/3

Y1 - 2002/3

N2 - The intermetallic compound PrPb3 exhibits antiferroquadrupolar (AFQ) ordering at low temperature. We investigated the magnetic phase diagram through measurements of the specific heat and the magnetocaloric effect. In zero magnetic field the specific heat shows a second-order phase transition with an ordering temperature TAFQ = 0.39 K in line with earlier results. In addition, we find a further transition at T* = 0.35 K for 3 T and T* = 0.49 K for 4.5 T, which, however, is only observed upon heating. The strong hysteresis between heating and cooling suggests that this transition is of first order. Under hydrostatic pressure of 6.5 kbar, the phase diagram is almost unaltered in agreement with an estimate of dTAFQ/dp by Ehrenfest's relation.

AB - The intermetallic compound PrPb3 exhibits antiferroquadrupolar (AFQ) ordering at low temperature. We investigated the magnetic phase diagram through measurements of the specific heat and the magnetocaloric effect. In zero magnetic field the specific heat shows a second-order phase transition with an ordering temperature TAFQ = 0.39 K in line with earlier results. In addition, we find a further transition at T* = 0.35 K for 3 T and T* = 0.49 K for 4.5 T, which, however, is only observed upon heating. The strong hysteresis between heating and cooling suggests that this transition is of first order. Under hydrostatic pressure of 6.5 kbar, the phase diagram is almost unaltered in agreement with an estimate of dTAFQ/dp by Ehrenfest's relation.

KW - Antiferroquadrupolar order

KW - PrPb

KW - Thermodynamic properties

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U2 - 10.1016/S0921-4526(01)01251-0

DO - 10.1016/S0921-4526(01)01251-0

M3 - Conference article

AN - SCOPUS:0036503975

SN - 0921-4526

VL - 312-313

SP - 855

EP - 857

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - International Conference on Strongly Correlated Electrons

Y2 - 6 August 2002 through 6 August 2002