Heat capacity studies of single-crystalline CePt4In

✍ Scribed by A.P. Pikul; D. Kaczorowski; Z. Bukowski; F. Steglich

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 185 KB
• Volume: 403
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.10.044

✦ Synopsis

Single crystals of CePt 4 In have been studied by means of specific heat measurements performed at low temperatures (down to 60 mK) and in high magnetic fields (up to 9 T). In zero magnetic field the DC=T ratio strongly increases with decreasing temperature down to about 250 mK, where a broad maximum ð% 1:75 J mol À1 K À2 Þ occurs. At lower temperatures DC=T slightly diminishes and finally saturates at a value of about 1:7 J mol À1 K À2 . Upon applying magnetic field the maximum in DC=TðTÞ disappears (it is not visible already in 0.5 T) and the magnitude of DC=T becomes significantly lower. We argue that the observed anomaly in DCðTÞ=T is due to some magnetic ordering of the cerium magnetic moments, in line with our previous statement on the localized character of the 4f-electrons in this compound.