Talk:Single-molecule magnet

message: Speedy merge proposal regarding Molecule based magnets: Wiki already has Single-molecule magnet V8rik 17:01, 4 December 2007 (UTC)
replies: text: Molecule based magnets are not single molecule magnets; they're still extended networks of molecules. The two are not equivalent and should not be merged (or, if merged, SMM should be a subcategory of molecule-based magnets, not the other way around). Thatjenn (talk) 23:42, 5 December 2007 (UTC)
thread_title: Merge proposal - 2007 - rejected 

message: How is magnetic field strenght or magnetic field density calcualted in such structures (B and H), for example like in rod magnets? What parameters are needed if it is known molecule - or what equation connects spin S in shells that contribute to ferromagnetic effect to magnetic field strenght or magnetic field density at macroscopic level?  —Preceding unsigned comment added by 193.2.9.35 (talk) 11:58, 13 October 2008 (UTC)
replies: text: The spins of the metal-ions can be coupled via the organic ligands in 2 ways: anti-ferromagnetic or ferromagnetic. The giant spin (U = S^2 |D| uses the giant spin model) of a SMM and the coupling parameters (S=10 for Mn12ac) are determined experimentally. This can be done by SQUID-measurements: temperature dependence and fit with an Heisenberg Hamiltonian gives coupling parameters and S; Saturation value of the field dependence at low T corresponds to S. For all those measurements you use macroscopic samples (powder or single-crystalline (->if u plan to determine D)). A SMM can be intermolecular coupled but it is not necessary for slow magnetization relaxation - for a "real" quantum computer intermolecular coupling is even necessary. I will expand this article in the next two months. Hollyev (talk) 16:32, 7 December 2009 (UTC)
replies: text: Thanks Hollyev for at least partly guiding me to this difficult subject. I've read many books and articles on molecular magnetism since I posted the above question in October last year, but it still remains difficult subject for the research I'm doing even if I have advanced knowledge in physics. One of the things many people will need is simplified explanation on how to obtain magnetic field strenght and density figures in classical way for various nanomagnetic structures, since those are important for further ideas in nanotech. So far, there are few articles out there covering coercive field SQUID measurements of powders, but that's still far away from getting actual magnetic field for each molecule of some powder. There was significant research done on this in Sweden and NIST in US. Regards..  —Preceding unsigned comment added by 193.2.9.35 (talk) 17:23, 9 December 2009 (UTC)
thread_title: Calculation question

message: Under "Types" you use "Ac" in the chemical formula. Is actinium actually in there???? I think you shouldn't abbreviate acetates in this manner since it stands for something else!!!!  —Preceding unsigned comment added by 97.115.115.241 (talk) 01:31, 10 April 2011 (UTC)
replies: text: Surely acetate. Materialscientist (talk) 01:44, 10 April 2011 (UTC)
thread_title:  Actinium or Acetate???? 

message: There are some dimetallic lanthanide complexes (J. Am. Chem. Soc. 2011, 133, 14236–14239) that has blocking temp of 14K. There is another dysprosium analog with 8 K. These are now the highest and second highest temp SMMs. Should be worth mentioning, somewhere.  — Preceding unsigned comment added by 169.234.215.251 (talk) 09:27, 24 November 2013 (UTC)
thread_title:  New SSMs not talked about 

message: What other possible applications apart from the data storage (& quantum computing and MRI) suggested in , and should we clarify that almost all existing work is at liquid helium temperatures, and mention the new results at -213°C  ? 
Is blocking temp the temp at which mag' hysteresis can be demonstrated ? - Rod57 (talk) 13:35, 6 September 2017 (UTC)
thread_title:  Possible applications at higher temperatures 

message: Since we don't have a single-atom magnet article we could start with a section here ? Multiple approaches, eg EPFL April 2016,IBM March 2017. Single atoms (eg in crystal lattices) rather than in molecules. - Rod57 (talk) 08:17, 12 October 2018 (UTC)
thread_title:  Where to discuss single-atom magnets 

message: This recent review is already well cited and in a top journal:
* 
Johnjbarton (talk) 21:09, 16 May 2024 (UTC)
thread_title:  Review article on quantum applications