The amateur garden

Abstract

This is the "Hoe Shop." The tower was ruined by fire many years ago, and because of its unsafely is being taken down at the present writing.

Magnetic Properties of CeBi

“…We observe two antiferromagnetic phases in zero field, one below 12.5 K and the other above this temperature. This result is in agreement with those of Cable et al [5], Bartho,lin et al [6] and with the results obtained by Tsuchida et al from heat capacity measurements [13]. This result is in disagreement with those obtained by Nereson et al [3].…”

“…The vanishing of this remanent magnetization a t the transition temperature between the two antiferromagnetic structures can be due to the domain structure. Below 12.5 K the domain population is 100% (001)) above 12.5K the domain population is 45% (OOl), 15% (loo), 40% (010) as shown by Cable and Koehler [5]. The thermal variation of the specific heat shows an anomaly at 14 K [13] on CeBi sample treated in magnetic field.…”

A search for internal distortion in CeBi

“…Upon warming up the crystal, while studying a largely c-domain-populated spot, it was found that the relative populations of the a and c domains reversed at Tr,,2 (12.5 K). A similar change in domain population has been observed by Cable & Koehler (1972) and also by Hulliger, Landolt, Ott& Schmekzer (1975).…”

“…CeBi has the NaCl-type structure and is paramagnetic at room temperature. At TN1--25.2K it undergoes a transition to a type I antiferromagnetic order and at TN2 --12.5 it undergoes a second transition to a type IA antiferromagnet (Cable & Koehler, 1972). A tetragonal distortion of the lattice is associated with the first transitions and has been studied with X-rays (Hulliger, Landolt, Ott & Schmekzer, 1975;Lander, Mueller & Vogt, 1974).…”