The Effect of a Magnetic Field on the Thermal Conductivity of Paramagnetic Crystals: Holmium Ethylsulphate
The thermal conductivity of crystals of holmium ethylsulphate has been measured in the range 1 to 4·25⚬K in zero magnetic field and also in fields up to 53 kG, applied parallel to the hexagonal axis. The change in the thermal resistivity in a field is characterized by two maxima separated by a... Full description
1st Person:  McClintock, P. V. E. 

Additional Persons:  Morton, I. P. verfasserin; Orbach, R. verfasserin; Rosenberg, H. M. verfasserin 
Source: 
in Proceedings of the Royal Society of London Vol. 298, No. 1454 (1967), p. 359378 More Articles 
Type of Publication:  Article 
Language:  English 
Published: 
1967 
Keywords: 
researcharticle

Online: 
Volltext 

LEADER  02269nma a2200289 c 4500  

001  JST070878579  
003  DE601  
005  20180602104424.0  
007  cr uuuuuuuu  
008  150325s1967 000 0 eng d  
024  8  a 2416069  
035  a 2416069  
040  b ger c GBVCP  
041  0  a eng  
100  1  a McClintock, P. V. E.  
245  1  4  a The Effect of a Magnetic Field on the Thermal Conductivity of Paramagnetic Crystals: Holmium Ethylsulphate h Elektronische Ressource 
300  a OnlineRessource  
520  a The thermal conductivity of crystals of holmium ethylsulphate has been measured in the range 1 to 4·25⚬K in zero magnetic field and also in fields up to 53 kG, applied parallel to the hexagonal axis. The change in the thermal resistivity in a field is characterized by two maxima separated by a local, temperatureindependent minimum at ca. 5·5 kG and another one, observable at 3⚬K and above at ca. 17 kG. The resistivity in very high fields is constant and is lower than that in zero field. The results are explained by assuming that direct process phononspin interactions scatter certain bands of phonons whose frequency depends on the separation of the energy levels produced by the applied field. A good quantitative fit to the experimental data is only obtained by calculating the total thermal resistivity (including boundary and point defect scattering) rather than the individual contribution due to spin scattering alone. A statistical model is used which takes account of the relative populations of the various energy levels and assumes a Gaussian lineshape for them. The line widths and the relative transition probabilities between the levels may be estimated from the theory since the calculations are very sensitive to the values of these parameters.  
653  a researcharticle  
700  1  a Morton, I. P. e verfasserin 4 aut  
700  1  a Orbach, R. e verfasserin 4 aut  
700  1  a Rosenberg, H. M. e verfasserin 4 aut  
773  0  8  i in t Proceedings of the Royal Society of London d London g Vol. 298, No. 1454 (1967), p. 359378 q 298:1454<359378 w (DE601)JST070763518 x 00804630 
856  4  1  u https://www.jstor.org/stable/2416069 3 Volltext 
912  a GBV_JSTOR  
951  a AR  
952  d 298 j 1967 e 1454 h 359378 